Signal Cyan
#51AEF5 · Signal Cyan
#51AEF5 is Signal Cyan, a cool blue color. It has an RGB value of 81, 174, 245 and a relative luminance of 0.386, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.39
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
2.41:1
AA normal✕
AA large✕
AAA normal✕
On black
The quick fox
8.72:1
AA normal✓
AA large✓
AAA normal✓
Color harmonies
Shades & tints
Similar named colors
Frequently asked
What is the color #51AEF5?
#51AEF5 is Signal Cyan, a cool blue color. In RGB it is 81, 174, 245, and in HSL it is 206°, 89%, 64%.
Is #51AEF5 a light or dark color?
#51AEF5 has a relative luminance of 0.386, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #51AEF5?
Its complementary color is #F59851. For softer combinations, try the analogous or split-complementary harmonies shown above.