Charcoal
#001B66 · Charcoal
#001B66 is Charcoal, a cool blue color. It has an RGB value of 0, 27, 102 and a relative luminance of 0.017, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.02
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
15.57:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.35:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #001B66?
#001B66 is Charcoal, a cool blue color. In RGB it is 0, 27, 102, and in HSL it is 224°, 100%, 20%.
Is #001B66 a light or dark color?
#001B66 has a relative luminance of 0.017, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #001B66?
Its complementary color is #664B00. For softer combinations, try the analogous or split-complementary harmonies shown above.