# S5 | anthropic/claude-opus-5 | run 2

## Prompt

Name three primary colors.

## Response

Red, yellow, and blue are the three traditional primary colors used in art and pigment mixing. In modern color science, the set depends on the medium: light uses red, green, and blue (additive), while printing uses cyan, magenta, and yellow (subtractive).

## Quick Comparison

| Model | Primaries | Used For |
|---|---|---|
| Traditional (RYB) | Red, yellow, blue | Painting, art education |
| Additive (RGB) | Red, green, blue | Screens, displays, lighting |
| Subtractive (CMY/CMYK) | Cyan, magenta, yellow | Ink, printing |

Want me to explain how secondary colors form in each of these models?
