Charcoal
#21453B · Charcoal
#21453B is Charcoal, a cool cyan color. It has an RGB value of 33, 69, 59 and a relative luminance of 0.049, making it a dark surface.
Temperature
❄ Cool
Hue family
cyan
Luminance
0.05
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
10.61:1
AA normal✓
AA large✓
AAA normal✓
On black
The quick fox
1.98:1
AA normal✕
AA large✕
AAA normal✕
Color harmonies
Shades & tints
Similar named colors
Frequently asked
What is the color #21453B?
#21453B is Charcoal, a cool cyan color. In RGB it is 33, 69, 59, and in HSL it is 163°, 35%, 20%.
Is #21453B a light or dark color?
#21453B has a relative luminance of 0.049, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #21453B?
Its complementary color is #45212B. For softer combinations, try the analogous or split-complementary harmonies shown above.