OSA-UCS Color Picker
An Interactive Exploration of the Optical Society of America's Uniform Color Scales
Drag to rotate · Scroll to zoom · Click a point to inspect
1067 points
Cleavage Plane Filter
No filter active — showing full cuboctahedral lattice.
Display Options
Coordinate System (Ljg)
+L Lightness · L = 0 is neutral gray (Y=30)
+j Yellow (+) · Blue (−) · "jaune"
+g Green (+) · Pink (−)
ΔUCS = √(2·ΔL² + Δj² + Δg²) = 2 per step
Color Inspector & Palette Builder
click any lattice point
No samples yet — click lattice points to build a palette.