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🎨 Colour Mixer
Mix colours with sliders — see how light (RGB) and pigment (CMYK) work differently. Discover why red + green = yellow in light!
Class 5–9 · Science & Art
🔴
Red
#FF0000
Red channel dominant.
R 255G 0B 0
💡 Additive Mixing Preview
R + G = Yellow
R + B = Magenta
G + B = Cyan
R+G+B = White
⚡ Quick Presets
📚 Additive vs Subtractive — Quick Comparison
💡 RGB (Light)
🖌️ CMYK (Pigment)
Primary colours
Red, Green, Blue
Cyan, Magenta, Yellow
Mix all = ?
⚪ White (brightest)
⚫ Black (darkest)
No colour = ?
⚫ Black (no light)
⚪ White (bare paper)
Used in
TVs, phones, monitors
Printers, paints, inks
R + G = ?
🟡 Yellow (surprise!)
🔴 Red (M + Y)
💡 Quick Science Facts
- Your phone screen has millions of tiny R, G, B light dots called pixels — they mix to make every colour you see.
- The human eye has three types of cone cells — sensitive to Red, Green, and Blue light.
- Printers use CMYK + Black (K) ink because mixing CMY alone makes muddy dark brown, not pure black.
- A rainbow is white light split by water droplets — each raindrop bends different wavelengths at different angles.
- Colour-blind people usually can't distinguish Red and Green (the most common type — affects ~8% of males).
- The K in CMYK stands for "Key" (the key printing plate) — not Black, to avoid confusion with Blue (B).