Cobalt
#21489C · Cobalt
#21489C is Cobalt, a cool blue color. It has an RGB value of 33, 72, 156 and a relative luminance of 0.074, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.07
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
8.50:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.47:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #21489C?
#21489C is Cobalt, a cool blue color. In RGB it is 33, 72, 156, and in HSL it is 221°, 65%, 37%.
Is #21489C a light or dark color?
#21489C has a relative luminance of 0.074, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #21489C?
Its complementary color is #9C7521. For softer combinations, try the analogous or split-complementary harmonies shown above.