Cobalt
#12157D · Cobalt
#12157D is Cobalt, a cool blue color. It has an RGB value of 18, 21, 125 and a relative luminance of 0.021, 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
14.69:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.43:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #12157D?
#12157D is Cobalt, a cool blue color. In RGB it is 18, 21, 125, and in HSL it is 238°, 75%, 28%.
Is #12157D a light or dark color?
#12157D has a relative luminance of 0.021, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #12157D?
Its complementary color is #7D7912. For softer combinations, try the analogous or split-complementary harmonies shown above.