Match Copper Bot's
color.

Copper Bot is one of Toon Tone's 30 original robots. The fill color sits at hue 20°, saturation 70%, brightness 65% — a vivid red that's easy to misjudge under cool screen lighting.

What makes this character matter for color training isn't just the hex value. It's the gap between what you remember after the preview and what your slider actually produces. That gap is what Delta-E measures, and Copper Bot is sized to make that gap visible without being punishing.

If you're working through the full roster in order, Copper Bot pairs well with the next character in its hue family — they share lighting cues but diverge on saturation. Use this one to build your color-memory baseline, then test it on the harder ones.