Evaluation Recipes

Evaluation

Determine whether a color is dark

Classify any parsed color using PHPColor's luminance-based light and dark helpers.

Evaluation

Classify a palette by comparing its perceptual hue angles with known harmony patterns.

Evaluation

Select whichever standard text color has the stronger WCAG contrast against a known background.

Evaluation

Measure the visible contrast of translucent text after it is composited onto its background.

Evaluation

Map an arbitrary color to the closest value already available in a controlled palette.

Evaluation

Measure the perceptual distance between an old brand color and a proposed replacement.

Evaluation

Produce a comparable palette that approximates deuteranopic color perception.

Evaluation

Calculate the lowest alpha that lets one foreground reach a required contrast ratio over one known background.

Evaluation

Test the intentional foreground and background pairs in a token system instead of producing noise from every possible combination.

Evaluation

Test the semantic color pairs that must remain distinct under every PHPColor vision simulation profile.