Color Contrast Calculator

COLOR CONTRAST
CALCULATOR

According to the ADAAG, the color and contrast of detectable warning materials must adhere to the following rule:

705.1.3 Contrast: Detectable Warning Surfaces shall contrast visually with adjacent walking surfaces either light-on-dark or dark-on-light.

High contrast helps visibility, and our Color Contrast Calculator is just the tool for determining the best colors for your project. Pick any of our premade ADA Dome colors and compare them with different cement colors to find how well they contrast.

Contrast differences

This tool helps in establishing light-on-dark or dark-on-light contrast differences, allowing the selection of a detectable ADA Tile color and a surrounding concrete color while displaying a percentage of contrast based on the LRV scale. This percentage of contrast can assist the governing body in developing the level of contrast that best meets the needs of the community.

Light Reflectance
value

Light Reflectance Value (LRV) is a universal value for ‘contrast’. It measures the proportion of useful light reflected by a colored object.

It represents a relative light and darkness value rather than an actual color, meaning dissimilar colors could have the same LRV. LRV is measured on a scale of 0 to 100, 0 being an all absorbing black and 100 being an all reflecting white.

ADA Tile Color
Concrete Color

Natural Colors

Federal Colors

ADA Tile Color

Federal Yellow

Concrete Color

Charcoal

=

93%

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