CSS notation

Use this for all CSS properties that accept a color as a value: color, background-color, border-color
#ffcc33
#fc3
rgb(255,204,51)
hsl(45, 100%, 60%)

Color spaces

Names and values for each color representation
HSL
Hue45°
Saturation100%
Lightness60%
HSV / HSB
Hue45°
Saturation80%
Value / Brightness100%
RGB
Red100%
Green80%
Blue20%
CMYK
Cyan0%
Magenta20%
Yellow80%
Black0%
YCbCr
Y0.79
Cb-0.33
Cr0.15

Nearest Colors Name

Most similar colors in standard

Color Harmonies

Schemes of colors that work well together
Complementary Harmony Color Scheme of #ffcc33

Complementary

Create the strongest contrast.
Triad Harmony Color Scheme of #ffcc33

Triad

Let one color dominate and use the other two for the accent.
Square Harmony Color Scheme of #ffcc33

Square

Balance between warm and cool colors.
Adjacent Harmony Color Scheme of #ffcc33

Adjacent / Analogous / Analogic

Pleasing and harmonious to the eye, they can be found in nature.
Split Complementary Harmony Color Scheme of #ffcc33

Split Complementary

Low tension, strong visual contrast.
Rectangle Tetradic Harmony Color Scheme of #ffcc33

Rectangle / Tetradic

Two complementary pairs for a total of four colors.

Tints, Shades, and Tones

Tints of color #ffcc33

Tints

A tint is obtained by adding white to a color. This process reduces darkness.
Shades of color #ffcc33

Shades

A shade is obtained by adding black to a color. This process increases darkness.
Tones of color #ffcc33

Tones

A tone is produced either by mixing a color with grey, or by both tinting and shading.