Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
In the L ∗ a ∗ b ∗ color space system the color differences are visualized as distances in a diagram. L ∗: color brightness (L ∗ = 0 is black and L ∗ = 100 is white). a ∗: position between red and green (negative values are progreen; positive values are prored). b ∗: position between yellow and blue (negative values are problue; positive values are proyellow).
