Contrast: separating information from the scenery
What needs to be distinguished
A game screen contains information with different roles: terrain locates the route, the ship indicates the player's position, and threats require interpretation. Examining contrast means observing how these pieces remain distinguishable when they share a scene.
Judging a figure against an empty background is insufficient. Its setting may include textures, other objects, and effects. Review gains value by retaining that combination and asking which information is difficult to recognize.
Guidance for interfaces and graphics
WCAG's non-text contrast criterion addresses visual information needed to identify interface components and understand graphics, with specific conditions and exceptions. [C41] Applying it requires examination of the particular element; one color or screenshot cannot establish a game's accessibility.
As a reading exercise, HUD review can be separated from route review. In the HUD, labels and states need recognition. Along the route, the ship, relevant boundary, and objects affecting a maneuver need identification. These tasks are related but not identical.
A useful record identifies which element was confused, where in the scene, and during which action. “The bar was distinguishable, but its text was not” describes a more precise issue than “the colors are wrong.” That precision allows a change to be evaluated without intuitively altering the whole environment.
Fuel and TNT in ALEXX SkyRider™
The Gate identifies blue Fuel and red TNT with different consequences. [C41] That distinction makes the information identifying each state particularly important. W3C's guidance on color encourages meaning to be accompanied by other signals; it does not establish that the project already meets every requirement.
When approaching a barrel, observe when its state becomes recognizable and which other cues help interpret it alongside color. The same question can be repeated against different backgrounds: which information remains distinguishable as the ship advances? In ALEXX SkyRider™, contrast can be understood through that specific decision, between the Face's visual identity and the object the pilot needs to recognize.
Sources
- C41: www.w3.org · www.w3.org