enableContrastSafeDerivedColors

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IChartConfig.enableContrastSafeDerivedColors property

Keeps colors derived for comparison (period-over-period) measures at the WCAG 1.4.11 minimum 3:1 contrast ratio against the chart background.

Signature:

enableContrastSafeDerivedColors?: boolean;

Remarks

When the standard derivation would produce a color too close to the background, the closest compliant blend in the same direction is used instead, and when no such blend exists the search continues in the opposite direction. Candidates keep a minimum distance from the master measure color so the two series stay distinguishable. If no candidate meets the ratio (for example on a mid-gray background), the standard color is kept.