Cobalt
#1B3FA1 · Cobalt
#1B3FA1 is Cobalt, a cool blue color. It has an RGB value of 27, 63, 161 and a relative luminance of 0.064, 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
9.24:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.27:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #1B3FA1?
#1B3FA1 is Cobalt, a cool blue color. In RGB it is 27, 63, 161, and in HSL it is 224°, 71%, 37%.
Is #1B3FA1 a light or dark color?
#1B3FA1 has a relative luminance of 0.064, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #1B3FA1?
Its complementary color is #A17E1B. For softer combinations, try the analogous or split-complementary harmonies shown above.