Cobalt
#0558B8 · Cobalt
#0558B8 is Cobalt, a cool blue color. It has an RGB value of 5, 88, 184 and a relative luminance of 0.105, 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
6.79:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
3.09:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #0558B8?
#0558B8 is Cobalt, a cool blue color. In RGB it is 5, 88, 184, and in HSL it is 212°, 95%, 37%.
Is #0558B8 a light or dark color?
#0558B8 has a relative luminance of 0.105, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #0558B8?
Its complementary color is #B86405. For softer combinations, try the analogous or split-complementary harmonies shown above.