Cobalt
#2A1F9E · Cobalt
#2A1F9E is Cobalt, a cool blue color. It has an RGB value of 42, 31, 158 and a relative luminance of 0.039, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.04
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
11.74:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.79:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #2A1F9E?
#2A1F9E is Cobalt, a cool blue color. In RGB it is 42, 31, 158, and in HSL it is 245°, 67%, 37%.
Is #2A1F9E a light or dark color?
#2A1F9E has a relative luminance of 0.039, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #2A1F9E?
Its complementary color is #939E1F. For softer combinations, try the analogous or split-complementary harmonies shown above.