Cobalt
#151C79 · Cobalt
#151C79 is Cobalt, a cool blue color. It has an RGB value of 21, 28, 121 and a relative luminance of 0.024, 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
14.25:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.47:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #151C79?
#151C79 is Cobalt, a cool blue color. In RGB it is 21, 28, 121, and in HSL it is 236°, 70%, 28%.
Is #151C79 a light or dark color?
#151C79 has a relative luminance of 0.024, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #151C79?
Its complementary color is #797315. For softer combinations, try the analogous or split-complementary harmonies shown above.