Search for a name or a RGB value RRR,GGG,BBB or a Hex value #rrggbb

CSS notation

Use this for all CSS properties that accept a color as a value: color, background-color, border-color
#660000
#600
rgb(102,0,0)
hsl(0, 100%, 20%)

Color space conversion

Conversion of this color for each color space representation
RGB
Red Green Blue
40% 0% 0%
HSL
Hue Saturation Lightness
100% 20%
HSV / HSB
Hue Saturation Value / Brightness
100% 40%
RGB - Normalized
Red Green Blue
0.4 0 0
HSL - Normalized
Hue Saturation Lightness
0 1 0.2
HSV / HSB - Normalized
Hue Saturation Value / Brightness
0 1 0.4
CMYK
Cyan Magenta Yellow Black
0% 100% 100% 60%
YCbCr
Y Cb Cr
0.12 -0.07 0.2
XYZ
X Y Z
5.48 2.82 0.26
CIE Lab
L a b
19.33 40.88 29.66

Nearest Colors Name

Matching similar color names

Color Harmonies

Schemes of colors that work well together
Complementary Harmony Color Scheme of #660000

Complementary

Create the strongest contrast.
Triad Harmony Color Scheme of #660000

Triad

Let one color dominate and use the other two for the accent.
Square Harmony Color Scheme of #660000

Square

Balance between warm and cool colors.
Adjacent Harmony Color Scheme of #660000

Adjacent / Analogous / Analogic

Pleasing and harmonious to the eye, they can be found in nature.
Split Complementary Harmony Color Scheme of #660000

Split Complementary

Low tension, strong visual contrast.
Rectangle Tetradic Harmony Color Scheme of #660000

Rectangle / Tetradic

Two complementary pairs for a total of four colors.
Pentagram Harmony Color Scheme of #660000

Pentagram

Circle around the color wheel, five colors.

Tints, Shades, and Tones

Tints of color #660000

Tints

A tint is obtained by adding white to a color. This process reduces darkness.
Shades of color #660000

Shades

A shade is obtained by adding black to a color. This process increases darkness.
Tones of color #660000

Tones

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