Cobalt
#21107E · Cobalt
#21107E is Cobalt, a cool blue color. It has an RGB value of 33, 16, 126 and a relative luminance of 0.022, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.02
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
14.58:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.44:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #21107E?
#21107E is Cobalt, a cool blue color. In RGB it is 33, 16, 126, and in HSL it is 249°, 77%, 28%.
Is #21107E a light or dark color?
#21107E has a relative luminance of 0.022, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #21107E?
Its complementary color is #6E7E10. For softer combinations, try the analogous or split-complementary harmonies shown above.