Colour series — shape candidates

hue
ic_001749 | dualtone
Saturation
ic_001797 | dualtone
Value vs Hue
ic_001759 | dualtone
Color Wheel
ic_001818 | dualtone
Contrast
ic_001752 | dualtone
Contrast Ratio
ic_001832 | dualtone
Color Blindness
ic_001835 | dualtone
Tint & Shade
ic_001837 | dualtone
Depth of Field
ic_001843 | dualtone
gradient
ic_001747 | dualtone
layer mask
ic_001891 | multicolor
Color Wheel Color theory
ic_001176 | multicolor
Contrast Prism Hierarchy
ic_001183 | multicolor
Color Harmony Palette
ic_001192 | dualtone
Chameleon bar changes color with speed.
ic_001419 | multicolor
paint palette
ic_000135 | multicolor
Reflection Pool Self-assessment
ic_000976 | multicolor
Reflection Pool Introspection
ic_001537 | dualtone