Cobalt
#3131B4 · Cobalt
#3131B4 is Cobalt, a cool blue color. It has an RGB value of 49, 49, 180 and a relative luminance of 0.061, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.06
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
9.42:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.23:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #3131B4?
#3131B4 is Cobalt, a cool blue color. In RGB it is 49, 49, 180, and in HSL it is 240°, 57%, 45%.
Is #3131B4 a light or dark color?
#3131B4 has a relative luminance of 0.061, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #3131B4?
Its complementary color is #B4B431. For softer combinations, try the analogous or split-complementary harmonies shown above.