Pair each color with a second cue
If red marks a hazard and green a safe path, also change shape, icon or border. A match game can show a symbol or texture on each category instead of relying on a palette legend. Keep the cue attached to the moving object.
Check foreground and background contrast for text, score labels and control outlines. W3C’s Contrast (Minimum) guidance describes the 4.5:1 criterion for most text and 3:1 for large text, with defined exceptions. Those figures address text contrast; they do not by themselves ensure that two gameplay colors are distinguishable, so use redundant cues and test real game states as well.
Review color in context
Inspect overlays, particles and dimmed states as well as the main scene. A hue that reads on a plain background may blend into a textured field. Check disabled controls too: players still need to identify their state when the screen is busy.
Ask a tester to identify hazards, pickups and status changes without describing the palette. If they hesitate, add a shape, label or animation cue and repeat the task. Use contrast analysis for text, then manual play checks for game states. W3C explains thresholds and exceptions.
Questions about accessible game colors
Is sufficient text contrast enough for game colors?
No. Contrast guidance supports readable text, but gameplay categories may still be confused if they rely only on hue. Add a second cue such as shape, pattern or label.
Should every color have a label?
Not necessarily. A distinct shape, icon, texture or position can carry the same information. Choose a cue that players can recognize quickly during the mechanic.