When considering a color as either warm or cold, you need a point of reference. For example, with these three yellows – Hansa Yellow Light, Hansa Yellow Medium, and Hansa Yellow Deep:

• Hansa Yellow Light is greener than the other two, so it’s considered cool.
• Hansa Yellow Deep is redder than the other two, so it’s considered warm.
• Hansa Yellow Medium is cooler than Hansa Yellow Deep, but warmer than Hansa Yellow Light.

Cool Primaries:

1. Hansa Yellow Light
2. Lemon Yellow
3. Quinacridone Rose
4. Permanent Alizarin Crimson
5. Phthalo Blue (Green Shade)
6. Cerulean Blue, Chromium

Warm Primaries:

1. Hansa Yellow Medium
2. Cadmium Yellow Medium Hue
3. Quinacridone Coral
4. Quinacridone Red
5. Phthalo Blue (Red Shade)
6. French Ultramarine