#51DEF1

#51DEF1

Color Values

HEX

#51DEF1

RGB

81, 222, 241

HSL

187.1, 85.1%, 63.1%

HSV

187.1, 66.4%, 94.5%

CMYK

66.4%, 7.9%, 0.0%, 5.5%

OKLCH

0.8328 0.1213 207.8

Properties

Cool Light Nearest: Sky Blue

Color Harmonies

Complementary

#51DEF1

#F16451

Analogous

#51F1B4

#518EF1

#51DEF1

Triadic

#51DEF1

#F151DE

#DEF151

Split Complementary

#51DEF1

#F1518E

#F1B451

Tetradic

#51DEF1

#B451F1

#F16451

#8EF151

Color Blindness Simulation

Original

#51DEF1

Protanopia

#8E8FEC

Deuteranopia

#867BEB

Tritanopia

#58E9E8

Achromatopsia

#C1C1C1

CSS Usage

background-color: #51DEF1;
color: #51DEF1;
border-color: #51DEF1;
Nearest Tailwind: Cyan 300 #67E8F9

Tailwind Shades

50
#F2FCFD
100
#E0F7FA
200
#BDF2FA
300
#8EEAF6
400
#50DEF1
500
#13D2EC
600
#0FA8BD
700
#0C8797
800
#096976
900
#0B4D56
950
#073036

Contrast Checker

Text on white

1.61:1

AA Fail AAA Fail

Text on black

13.07:1

AA Pass AAA Pass

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026