Cobalt
#2108DD · Cobalt
#2108DD is Cobalt, a cool blue color. It has an RGB value of 33, 8, 221 and a relative luminance of 0.057, 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
9.80:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.14:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #2108DD?
#2108DD is Cobalt, a cool blue color. In RGB it is 33, 8, 221, and in HSL it is 247°, 93%, 45%.
Is #2108DD a light or dark color?
#2108DD has a relative luminance of 0.057, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #2108DD?
Its complementary color is #C5DD08. For softer combinations, try the analogous or split-complementary harmonies shown above.