Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 211 - DEFINITIONS AND GENERAL PROVISIONS
Subpart B - DEFINITIONS
Section 211.5400 - Red Coating

"Red coating" means, for purposes of 35 Ill. Adm. Code 218 and 219, a coating that meets all of the following criteria:

Yellow limit: the hue of hostaperm scarlet;

Blue limit: the hue of monastral red-violet;

Lightness limit for metallics: 35 percent aluminum flake;

Lightness limit for solids: 50 percent titanium dioxide white;

Solid reds: hue angle of -11 to 38° and maximum lightness of 23 to 45 units; and

Metallic reds: hue angle of -16 to 35° and maximum lightness of 28 to 45 units.

These criteria are based on Cielab color space, 0/45 geometry. For spherical geometry, specular included, the upper limit is 49 units.