Cobalt
#123E7D · Cobalt
#123E7D is Cobalt, a cool blue color. It has an RGB value of 18, 62, 125 and a relative luminance of 0.051, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.05
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
10.44:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.01:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #123E7D?
#123E7D is Cobalt, a cool blue color. In RGB it is 18, 62, 125, and in HSL it is 215°, 75%, 28%.
Is #123E7D a light or dark color?
#123E7D has a relative luminance of 0.051, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #123E7D?
Its complementary color is #7D5012. For softer combinations, try the analogous or split-complementary harmonies shown above.