#51BBCC

#51BBCC

Color Values

HEX

#51BBCC

RGB

81, 187, 204

HSL

188.3, 54.7%, 55.9%

HSV

188.3, 60.3%, 80.0%

CMYK

60.3%, 8.3%, 0.0%, 20.0%

OKLCH

0.737 0.0994 209.6

Properties

Cool Light Nearest: NCS S 0530-B40G Aqua

Color Harmonies

Complementary

#51BBCC

#CC6251

Analogous

#51CCA0

#517ECC

#51BBCC

Triadic

#51BBCC

#CC51BB

#BBCC51

Split Complementary

#51BBCC

#CC517E

#CCA051

Tetradic

#51BBCC

#A051CC

#CC6251

#7ECC51

Color Blindness Simulation

Original

#51BBCC

Protanopia

#7F80C8

Deuteranopia

#7971C7

Tritanopia

#56C5C4

Achromatopsia

#A6A6A6

CSS Usage

background-color: #51BBCC;
color: #51BBCC;
border-color: #51BBCC;
Nearest Tailwind: Cyan 500 #06B6D4

Tailwind Shades

50
#F4FAFB
100
#E5F3F5
200
#C8E9EF
300
#A0DAE3
400
#6DC6D4
500
#3AB2C5
600
#2E8E9E
700
#25727E
800
#1D5963
900
#194248
950
#10292E

Contrast Checker

Text on white

2.25:1

AA Fail AAA Fail

Text on black

9.33:1

AA Pass AAA Pass

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

2月 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

1月 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

1月 21, 2026