Charcoal
#3F4550 · Charcoal
#3F4550 is Charcoal, a cool blue color. It has an RGB value of 63, 69, 80 and a relative luminance of 0.059, 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
9.64:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
2.18:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #3F4550?
#3F4550 is Charcoal, a cool blue color. In RGB it is 63, 69, 80, and in HSL it is 219°, 12%, 28%.
Is #3F4550 a light or dark color?
#3F4550 has a relative luminance of 0.059, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #3F4550?
Its complementary color is #504A3F. For softer combinations, try the analogous or split-complementary harmonies shown above.