Charcoal
#303C5F · Charcoal
#303C5F is Charcoal, a cool blue color. It has an RGB value of 48, 60, 95 and a relative luminance of 0.047, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.05
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
10.84:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.94:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #303C5F?
#303C5F is Charcoal, a cool blue color. In RGB it is 48, 60, 95, and in HSL it is 225°, 33%, 28%.
Is #303C5F a light or dark color?
#303C5F has a relative luminance of 0.047, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #303C5F?
Its complementary color is #5F5330. For softer combinations, try the analogous or split-complementary harmonies shown above.