contrast/contrast library

Enums

Algo

ContrastDirection

Polarity override for contrastingLstar.

Usage

Functions

apcaInterpolation({required double percent, required Usage usage}) → double

contrastingLstar({required double withLstar, required Usage usage, Algo by = Algo.apca, required double contrast, bool debug = false, ContrastDirection? forceDirection}) → double

contrastingTone({required int withArgb, required double withTone, required double targetHue, required double targetChroma, required Usage usage, Algo by = Algo.apca, required double contrast, bool debug = false, ContrastDirection? forceDirection, ColorModel colorModel = ColorModel.kDefault}) → double

Solve for a tone that achieves usage-level contrast against a reference surface, using actual ARGB for APCA precision.

contrastRatioInterpolation({required double percent, required Usage usage}) → double

contrastRatioOfLstars(double a, double b) → double

lstarPrefersLighterPair(double lstar) → bool

sharedForegroundDirection({required double backgroundTone, required double contrast, Algo by = Algo.apca}) → ContrastDirection

Chooses foreground polarity from context-level inputs only.