Cobalt
#0355BA · Cobalt
#0355BA is Cobalt, a cool blue color. It has an RGB value of 3, 85, 186 and a relative luminance of 0.101, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.10
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
6.97:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
3.01:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #0355BA?
#0355BA is Cobalt, a cool blue color. In RGB it is 3, 85, 186, and in HSL it is 213°, 97%, 37%.
Is #0355BA a light or dark color?
#0355BA has a relative luminance of 0.101, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #0355BA?
Its complementary color is #BA6803. For softer combinations, try the analogous or split-complementary harmonies shown above.