Charcoal
#003166 · Charcoal
#003166 is Charcoal, a cool blue color. It has an RGB value of 0, 49, 102 and a relative luminance of 0.032, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.03
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
12.87:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.63:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #003166?
#003166 is Charcoal, a cool blue color. In RGB it is 0, 49, 102, and in HSL it is 211°, 100%, 20%.
Is #003166 a light or dark color?
#003166 has a relative luminance of 0.032, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #003166?
Its complementary color is #663500. For softer combinations, try the analogous or split-complementary harmonies shown above.