Cobalt
#283F95 · Cobalt
#283F95 is Cobalt, a cool blue color. It has an RGB value of 40, 63, 149 and a relative luminance of 0.062, 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
9.40:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.24:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #283F95?
#283F95 is Cobalt, a cool blue color. In RGB it is 40, 63, 149, and in HSL it is 227°, 58%, 37%.
Is #283F95 a light or dark color?
#283F95 has a relative luminance of 0.062, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #283F95?
Its complementary color is #957D28. For softer combinations, try the analogous or split-complementary harmonies shown above.