Palette diff
See exactly what changed. Delta-E scoring. Side-by-side swatches. Perception labels.
CIE76 Delta-E. Role by role.
Select two palettes. Paletter computes CIE76 Delta-E distance for each role pair. Background vs Background. Ink vs Ink. Accent vs Accent. Side-by-side swatches show the visual difference. Perception labels -- "barely noticeable", "noticeable", "very different" -- make the numbers meaningful.
Delta-E is the standard measure of perceptual color difference. A Delta-E of 1.0 is the smallest difference the human eye can detect. We use CIE76 because it is well-understood, widely adopted, and maps cleanly to design decisions.
Color decisions. Objectified.
Rebranding
Compare old palette vs new. See exactly how far the brand shifted. Present objective data, not subjective opinions.
Iterating
Compare version 3 to version 7. Track drift across iterations. Know whether you are refining or wandering.
Client feedback
Show exactly what changed and by how much. Delta-E numbers and perception labels turn "I don't like it" into a measurable conversation.
Competitive analysis
Extract palettes from two competing brands. See how close they are. Find the gap where your client can own a color.
One number. Clear language.
An overall Delta-E average across all five roles tells you whether the change is subtle refinement or wholesale shift. Clear language for stakeholder reviews.