CSS notation

Use this for all CSS properties that accept a color as a value: color, background-color, border-color
#210000
rgb(33,0,0)
hsl(0, 100%, 6%)

Color spaces

Names and values for each color representation
HSL
Hue
Saturation100%
Lightness6.47%
HSV / HSB
Hue
Saturation100%
Value / Brightness12.94%
RGB
Red12.94%
Green0%
Blue0%
CMYK
Cyan0%
Magenta100%
Yellow100%
Black87.06%
YCbCr
Y0.04
Cb-0.02
Cr0.06

Nearest Colors Name

Most similar colors in standard

Color Harmonies

Schemes of colors that work well together
Complementary Harmony Color Scheme of #210000

Complementary

Create the strongest contrast.
Triad Harmony Color Scheme of #210000

Triad

Let one color dominate and use the other two for the accent.
Square Harmony Color Scheme of #210000

Square

Balance between warm and cool colors.
Adjacent Harmony Color Scheme of #210000

Adjacent / Analogous / Analogic

Pleasing and harmonious to the eye, they can be found in nature.
Split Complementary Harmony Color Scheme of #210000

Split Complementary

Low tension, strong visual contrast.
Rectangle Tetradic Harmony Color Scheme of #210000

Rectangle / Tetradic

Two complementary pairs for a total of four colors.

Tints, Shades, and Tones

Tints of color #210000

Tints

A tint is obtained by adding white to a color. This process reduces darkness.
Shades of color #210000

Shades

A shade is obtained by adding black to a color. This process increases darkness.
Tones of color #210000

Tones

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