Sky
#21A4C4 · Sky
#21A4C4 is Sky, a cool cyan color. It has an RGB value of 33, 164, 196 and a relative luminance of 0.309, making it a dark surface.
Temperature
❄ Cool
Hue family
cyan
Luminance
0.31
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
2.93:1
AA normal✕
AA large✕
AAA normal✕
On black
The quick fox
7.17:1
AA normal✓
AA large✓
AAA normal✓
Color harmonies
Complementary
Split-complementary
Shades & tints
Similar named colors
Frequently asked
What is the color #21A4C4?
#21A4C4 is Sky, a cool cyan color. In RGB it is 33, 164, 196, and in HSL it is 192°, 71%, 45%.
Is #21A4C4 a light or dark color?
#21A4C4 has a relative luminance of 0.309, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #21A4C4?
Its complementary color is #C44221. For softer combinations, try the analogous or split-complementary harmonies shown above.