Signal Cyan
#51BCF5 · Signal Cyan
#51BCF5 is Signal Cyan, a cool blue color. It has an RGB value of 81, 188, 245 and a relative luminance of 0.443, making it a dark surface.
Temperature
❄ Cool
Hue family
blue
Luminance
0.44
Conversions
HEX
RGB
HSL
HSV
CMYK
OKLCHPro
Contrast & accessibility
On white
The quick fox
2.13:1
AA normal✕
AA large✕
AAA normal✕
On black
The quick fox
9.86:1
AA normal✓
AA large✓
AAA normal✓
Color harmonies
Shades & tints
Similar named colors
Frequently asked
What is the color #51BCF5?
#51BCF5 is Signal Cyan, a cool blue color. In RGB it is 81, 188, 245, and in HSL it is 201°, 89%, 64%.
Is #51BCF5 a light or dark color?
#51BCF5 has a relative luminance of 0.443, so it reads as a dark surface. Use light text on top of it for the best contrast.
What colors go well with #51BCF5?
Its complementary color is #F58B51. For softer combinations, try the analogous or split-complementary harmonies shown above.