#51B4BC

#51B4BC

Color Values

HEX

#51B4BC

RGB

81, 180, 188

HSL

184.5, 44.4%, 52.7%

HSV

184.5, 56.9%, 73.7%

CMYK

56.9%, 4.3%, 0.0%, 26.3%

OKLCH

0.7144 0.0926 202.5

Properties

Cool Light Nearest: NCS S 0530-B40G Aqua

Color Harmonies

Complementary

#51B4BC

#BC5951

Analogous

#51BC8E

#517EBC

#51B4BC

Triadic

#51B4BC

#BC51B4

#B4BC51

Split Complementary

#51B4BC

#BC517E

#BC8E51

Tetradic

#51B4BC

#8E51BC

#BC5951

#7EBC51

Color Blindness Simulation

Original

#51B4BC

Protanopia

#7C7DBA

Deuteranopia

#766FBA

Tritanopia

#56B9B8

Achromatopsia

#A0A0A0

CSS Usage

background-color: #51B4BC;
color: #51B4BC;
border-color: #51B4BC;
Nearest Tailwind: Cyan 500 #06B6D4

Tailwind Shades

50
#F4FAFA
100
#E6F3F4
200
#CBE9EB
300
#A7D9DD
400
#77C4CB
500
#47B0B8
600
#398C93
700
#2D7076
800
#23585C
900
#1D4144
950
#12292B

Contrast Checker

Text on white

2.44:1

AA Fail AAA Fail

Text on black

8.6:1

AA Pass AAA Pass

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026