Cobalt
#1F51C7 · Cobalt
#1F51C7 is Cobalt, a cool blue color. It has an RGB value of 31, 81, 199 and a relative luminance of 0.103, 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
6.86:1
AA normal✓
AA large✓
AAA normal✕
On black
The quick fox
3.06:1
AA normal✕
AA large✓
AAA normal✕
Color harmonies
Complementary
Analogous
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #1F51C7?
#1F51C7 is Cobalt, a cool blue color. In RGB it is 31, 81, 199, and in HSL it is 222°, 73%, 45%.
Is #1F51C7 a light or dark color?
#1F51C7 has a relative luminance of 0.103, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #1F51C7?
Its complementary color is #C7941F. For softer combinations, try the analogous or split-complementary harmonies shown above.