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← Spec Suite Index Tool 01

LRV Calculator

Calculate luminance contrast between tactile indicator and substrate using the Bowman-Sapolinski equation. Compliance checked against AS 1428.4.1 thresholds.

Tool 01
LRV Calculator

Calculates luminance contrast (LRV difference) between tactile indicator and substrate using the Bowman-Sapolinski equation. Checks compliance against AS 1428.4.1 thresholds for all TGSI types.

AS 1428.4.1:2009 · AS 1428.1:2021
Bowman-Sapolinski Equation: C = 125×(Y₂−Y₁)÷(Y₁+Y₂+25)
Compliance Pack

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