Cobalt
#3F08B4 · Cobalt
#3F08B4 is Cobalt, a cool violet color. It has an RGB value of 63, 8, 180 and a relative luminance of 0.045, making it a dark surface.
Temperature
❄ Cool
Hue family
violet
Luminance
0.05
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
11.02:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.91:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #3F08B4?
#3F08B4 is Cobalt, a cool violet color. In RGB it is 63, 8, 180, and in HSL it is 259°, 91%, 37%.
Is #3F08B4 a light or dark color?
#3F08B4 has a relative luminance of 0.045, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #3F08B4?
Its complementary color is #7EB408. For softer combinations, try the analogous or split-complementary harmonies shown above.