Since Goethe and Chevreul wrote their respective colour theories in the early 19th century, we have all been taught colour theory based upon the concept that red, yellow and blue are the primary colours. Despite the difficulty this caused artists, it has been almost universally accepted by artists.

The problem with the old theory when it comes to mixing paints in the real world, it doesn’t work. (Standard theory works with optics, just not with paint pigments.)

For instance, in the old theory, red and green are complementary colours. In other words, they are opposite to each other on the old colour wheel. Being opposite to each other, when mixed, theory says, they should cancel each other out. Green should darken red and vice versa. They should mix down to a neutral black.

Doesn’t happen. They produce a rather dirty brown. In fact, dirty brown is about all you get when you mix any complementary colours on the old colour wheel.

Another thing wrong with the old colour wheel and these three “primaries” is that you cannot mix fundamental colours with them. Try mixing magenta out of the three so-called primaries. You can’t do it.

Additionally, you are not supposed to be able to mix anything and produce a primary colour. However, if you mix a pure magenta and a clean, transparent yellow, you can get pure red. What’s going on here?

The old theory and the old colour wheel simply don’t work when it comes to mixing pigments. However, there is a replacement for the old wheel that makes colour mixing easy.

The new colour wheel has yellow, magenta and cyan as the primaries. These have been used in the printing industry for years. And most scientific papers relating to colour use them as the primary colours for subtractive colour mixing. These produce a far larger group of colours, in a far more predictable manner than the old colour wheel did.

Mix cyan and magenta and you will arrive at blue, yellow and cyan for green, and yellow and magenta for red. Mix their complements and you get black.

I’ve done my own testing and have read much research done by others like Dan Jasko (He has done a huge amount of testing. His website www.realcolorwheel.com has hundreds of pages of information.). Through all this, I’ve found that the following are the best pigments to use for the three primary colours:

Cyan = Phthalo Blue, yellow shade (PB:15.3)
Yellow = Hansa Yellow Medium (PY:73)
Magenta = Quinacridone Magenta (PR:122)

With these three pigments you can mix a wide variety of hues. However, to make mixing easier and quicker, it helps to add four more colours to a working palette:

Phthalo Green yellow shade (PG:36)
Napthol Red Light (PR:9)
Burnt Umber (PBr:7)
Indanthrene Blue (PB:60)

It’s important to check that the paints you choose use the right pigment. For instance, the right magenta will use pigment PR:122. Some manufacturers will call a colour the same name as another manufacturer, however, they will use a different pigment.

Add white to your palette and you have what it takes to create almost any colour.

Here’s the basic new colour wheel.

One thing to note, you cannot mix the primary yellow with its compliment and get a dark neutral. Yellow is just too light. However, there is a very handy yellow that is quite dark, and works perfectly, Burnt Umber. Mix Burnt Umber with Indanthrene Blue and you get a fabulous neutral dark.

Some artists are afraid of colours like Phthalo Blue, as they are so intense. Their intensity or high Chroma is why they were chosen. The act of mixing colours almost always lowers the Chroma of the resulting colour. You cannot mix two colours to make a richer (higher chroma) colour. Mixes are always duller. So it makes sense to start with the highest Chroma colours for each of the eight colours on our palette. With these eight you can mix down to almost any other colour, but with other colours you can’t mix up to these. For example, you cannot take a Cobalt Blue and mix it 'up' it look like a Phthalo Blue.

Another thing you might notice about this palette choice, they are all transparent colours. This is something else few people seem to be teaching, perhaps because they don’t know it. If you mix three opaque colours together, you tend to get mud and you certainly don’t get the richest colours. If you mix a transparent and a translucent colour, you get a near full colour mix. If you mix an opaque with a transparent you get a good mix, even a translucent with an opaque does a better job than two opaque colours.

It’s all about the physics of light. Here’s a diagram of what happens (This is an approximation as the reality is too complex to demonstrate in a simple diagram.):

In simple terms, with opaque paint, most of the light bounces around near the surface of the paint layer interacting with the various pigment molecules and exits, as it should, as a mixed colour. This is subtractive mixing. However a fair amount of light simply hits one or the other of the pigment molecules on the top of the paint layer and reflects back at the viewer unmixed (in what is called additive-averaging mixing). This lightens the perceived value of the paint, making it next to impossible to mix really dark colours or neutral blacks.

With transparent pigments, the light passes through the entire depth of the paint layer, bouncing around amongst the pigment molecules and exits again, completely mixed. Very little of the incoming light bounces back from the top of the paint layer, which means that almost all light coming off the paint is full of colour with little reflected, additive-averaging light. This allows for much denser, darker colours, including neutral blacks.

This same phenomenon seems to be at the root of the problem of “mud”. When opaque colours are used to mix new colours, as soon as you bring in a third colour, or you use a multiple pigment colour, the odds are stacked against you producing a “clean” colour. With transparent pigments, you have a much wider latitude of mixing choices, which helps you avoid creating mud.

I’ve also found that using the new colour wheel to guide in selecting harmonic paintings works as well as the old colour wheel. You can still do complementary, analogous, triadic and all of the other harmonies you used under the old system, just with new colour sets. I haven’t had time to try all harmonic sets, however, those that I have tried seem to work.

No limited palette can produce as many colours as are produced by modern paint manufacturers, and certainly not the wide range of colour in nature, however, for those wanting to work with a limited palette that they can learn to control easily, the new colour wheel and its palette are a great place to start.

If you want to purchase a colour wheel, the only commercial product I’ve found that comes close to showing the correct relationships is the CMY colour wheel available in some art stores. You can also visit www.realcolorwheel.com and download one of Dan Jasko’s colour wheels. (You have to print it out on high quality photo paper on a good inkjet printer or it won’t be of much use.) I give each of our students the opportunity to purchase one of these colour wheels when they finish one of our workshops or classes. You can find out about classes at www.wilsonstreetstudios.com.

I have  been using this palette since around 2012. The new colour wheel and palette seems to be catching on beyond a small group of practicing artists, as even the paint manufacturer Golden has come out with a paint set they call “Principal 8 Color Mixing – Modern Theory”. It contains the same set of colours that I have been using, teaching and promoting for a number of years. The only difference is that their Anthraquinone Blue is opaque whereas Indanthrene Blue by Liqutex is transparent. (Known under both names in oil.)

Give the modern colour theory a try and you might find it opens new possibilities for your art.

Author: Keith Thirgood, Wilson Street Studio, Markham, Ontario. Keith is a Canadian landscape artist whose work is inspired by the post-impressionists, Group of Seven and a number of modern painters. His work can be found at www.wilsonstreetstudios.com. He is also president of the Ontario Plein Air Society (OPAS), www.ontariopleinairsociety.com.

We paddle a couple of kilometres down Long Lake until we reach the Buzzard Lake portage. We take the 300 metre portage to Buzzard Lake and then continue paddling until we reach our campsite. That evening, after supper, we have a discussion on plein air painting, composition and what we all hope to gain out of the retreat.

The next morning, after we each prepare our breakfast and lunch for the day, we head off in our canoes to the first painting location. Some of us will paint from our canoes; others will set up on land.

We've often been asked what an artist should to bring when going plein air painting. Not that easy to say, as we are all so different, however, I can say what I bring. (This is for acrylic painting.)
First, you need to control your selection of paint. Depending upon how far I expect to walk with my kit, I bring either a bare minimum palette of colours, or a slightly expanded set.
Bare minimum set
Hansa Yellow Medium
Napthol Red Light
Quinacridone Magenta
Burnt Umber
Indanthrene Blue
Titanium White

Expanded set
Hansa Yellow Medium
Napthol Red Light
Quinacridone Magenta
Burnt Umber
Indanthrene Blue
Phthalo Blue (green shade)
Phthalo Green (yellow shade)
Titanium White
Polymer medium
With either of these two paint kits, you can mix almost any colour you come across.

Two brushes: Catalyst by Princeton Polytip bristle 1" & 1/2" Brights (great brushes for plein air, if you like stiff, easy to control brushes)
Palette: Non-stick baking tray
Field easel (I have my own custom-made easel) or pochade box with tripod
Yoghurt tub for cleaning brushes
Rags for cleaning brushes
Viewfinder
Small sketchbook
1 soft pencil
Eraser
Grey-scale markers: black, medium and light non-bleed markers
1 small spritzer bottle for keeping the paint on the palette open
Clamp-on umbrella to shade painting board and palette
3-4, 12x16 (or whichever size you like to work with) painting boards for the day, already primed orange or black
Stool (If you paint sitting down)
Backpack large enough to carry all of the above except the boards, which I carry in a board holder
Water for painting, if you will not be near a water source
Camera to shoot scene and capture progress of your painting

Non-Painting Items
Sun hat
Sunscreen
Insect repellant
Drinking water
Snacks
Sweater or similar in case it turns cool
Rain gear if there's chance of rain
Pliers, for opening stuck paint tubes
Good walking shoes
Cell phone for emergencies

If you are going deep off the regular track, these other items are good to have as well
Compass and/or GPS
Food & more water
Whistle for signalling
Basic first aid kit
Walking pole
Map of area
Space blanket

The following are ten steps I encourage all of our students to consider as they paint.

1. Start with a Value Sketch. Break the scene into large shapes based upon values. This is the time and place to solve problems with your composition. If the value sketch doesn't look like a great painting in the making, then fix the compositional problems in the sketch, or do another one from a different vantage point.
2. Trace out your composition onto your painting surface using your value sketch as your guide. Don't look at your subject while you do this, as there will be a temptation to add new things  into the composition.
   
3. When you begin painting, rough in your focal point first and then establish your other major shapes based upon the focal point.
4. Paint with a big brush to stop you from wasting your time and draining the energy from your painting. A 3/4" brush on an 8x10 canvas, 1" brush on a 12x16 or 16x20. Go bigger if you work on bigger surfaces.
   
5. Learn to paint with your arm, not with minuscule movements of your fingers and wrist. By painting with your arm, you use the energy of your body vs the energy of your fingers.
6. Watch where the light is coming from and what it does. Where are the highlights and where are the shadows? If you're painting plein air, capture these in your value sketch, and don't chase your shadows all over your canvas. Establish them in the beginning and stick to them.
   
7. Start with your foreground and mid-ground shapes first. Finish by cutting in your background. This has two effects. It allows you to finish and refine your foreground shapes. And, the resulting painting will automatically look more "painterly".
   
8. Vary your brushwork. Unless you are trying to achieve a specific effect, use different (appropriate) strokes for different areas. However, don't get too complicated either so that your brushwork becomes the subject of the painting. Do this for effect, not for it's own sake or to show off your technique.
9. Make sure you balance your accent colours. Usually a good approach is to use your accent in three spots on the painting. The main accent, secondary and a tertiary spot. 
10. Finish your painting by placing your final highlight and deep shadow marks.

Try these ten steps on your next painting and see if they help you keep out of trouble and produce stronger, more cohesive work.

Cheers,
Keith Thirgood
www.wilsonstreetstudios.com

I've been on the hunt for juried art shows and juried Art in the Park style events. I've spent so much time on it, I've neglected our blog. So I decided to post what I've found in our blog. I invite you to add shows that you've heard of, where there is still time for members to sign up for. 

With some of these shows, you have to join the organization hosting them, however, that's often not a real barrier. Sometimes the shows have a restricted geographic barrier. If there are any restrictions that you know of, please mention them when you list a show.

If I come across any more, I'll add them to the post.

artcetera 2013  Elora Centre for the Arts (ECFTA)  http://www.eloracentreforthearts.ca  APPLICATION DUE MARCH 8

Beaux Arts Brampton juried show http://beaux-artsbrampton.com  APPLICATION DUE MARCH 8

Stratford Art in the Park  http://www.artintheparkstratford.com/applicants.php   APPLICATION DUE March 15

Sunnyside Beach juried art show (art in the park style)http://www.artinitiatives.ca/sunnyside/home.html  APPLICATION DUE MARCH 31

Judith and Norman Alex Art Gallery  https://www.jnaag.ca/about/call-for-entry-juried-art-show   Application due April 4 (South west Ontario residents only)

Aurora Annual Art Show & Sale  http://www.town.aurora.on.ca/aurora/artshow April 15 however, once all spots are taken no more are accepted.

Blue Mountain Foundation for the Arts  http://www.bmfa.on.ca/applications.html   APPLICATION DUE April 5 or 6

Quinte Art Council  Expressions http://www.quinteartscouncil.org/events/expressions/expressions.html  Due April 8

Warkworth Art in the Park  http://www.warkworthartinthepark.ca/call-for-entries/   APPLICATION DUE April 12

Jazz It Up juried art show Whitby  Jazz it Up  APPLICATION DUE April 15 or 17 in person

Art in the Park Oakville   http://www.artintheparkoakville.com/apply_to_aip.html   APPLICATION DUE APRIL 25

Art in the Park Petrolia   http://www.artintheparkpetrolia.com/htm/vendor_app.php  ASAP

Schomberg Village Street Gallery http://svsg.ca/  APPLICATION DUE May 13Art in the Park Sarnia  http://artintheparksarnia.com/?q=application/application-fees  June 1 or as soon as all space is filled

Art in the County held in Picton, Ontario http://artinthecounty.com/   APPLICATION DUE June 14

Uxbridge Art in the Park http://www.uxbridge.com/lionsart/    APPLICATION DUE August 1, however as soon as they have enough artists, they close applications



I welcome you to add to this list.

Cheers,

Keith Thirgood
President OPAS

www.wilsonstreetstudios.com

Some of my art students are struggling with (at least) two things: Finding the colours in a scene where they aren't all that apparent, and loosening up their painting style. For some reason, it's not all that easy to loosen up; I said to one person, you'd think we'd been asked to bungee jump when all we're doing is just pushing paint around on a canvas. Her friend retorted, it's more like jumping without the bungee. Yet we continue to aspire to a looser rendering, not trusting the result.

The rock and pine scene, above, faced us across the water as we set up our easels at a boat launch in Haliburton, Ontario on the first drizzly morning of A Brush With the Highlands, an annual weekend plein air festival.  

Mostly done when I took the shot, Keith's red underpainting shimmers through his shapes, giving an otherwise grey-green scene a spark of vitality and warmth, though you can still appreciate the cool, overcast elements.

What to do? I could see that the rocks had some blue in them, so I laid down some quick blue strokes. I made the blue more intense, keeping the value correct. Working loose and fast I intensified the surrounding colours to keep in harmony with the new, more vibrant blue rocks. 

To get past tightness and fussiness I find the faster I work, the better the result. 

However, there are times when the best plan is to walk away rather than to linger, "finishing" and "fixing". Better to say, "My work here is done" and heed the siren call of the hot chocolate at the cafe down the road.