SpyColor.comProvides information about any color, including conversions to many color models (RGB, CMYK, HSL, HSV, XYZ, xyY, CIELAB, CIELUV, CIELCH, Hunter Lab and YIQ). Schemes (harmonies), like complementary, split-complementary, triadic, tetradic, five-tone, clash, analogous and monochromatic colors can be found on each color page.