#66C5CF

#66C5CF

Color Values

HEX

#66C5CF

RGB

102, 197, 207

HSL

185.7, 52.2%, 60.6%

HSV

185.7, 50.7%, 81.2%

CMYK

50.7%, 4.8%, 0.0%, 18.8%

OKLCH

0.7692 0.0909 204.5

Properties

Cool Light Nearest: NCS S 0530-B40G Aqua

Color Harmonies

Complementary

#66C5CF

#CF7066

Analogous

#66CFA4

#6691CF

#66C5CF

Triadic

#66C5CF

#CF66C5

#C5CF66

Split Complementary

#66C5CF

#CF6691

#CFA466

Tetradic

#66C5CF

#A466CF

#CF7066

#91CF66

Color Blindness Simulation

Original

#66C5CF

Protanopia

#8F90CD

Deuteranopia

#8A82CC

Tritanopia

#6BCBCA

Achromatopsia

#B2B2B2

CSS Usage

background-color: #66C5CF;
color: #66C5CF;
border-color: #66C5CF;
Nearest Tailwind: Cyan 300 #67E8F9

Tailwind Shades

50
#F4FAFB
100
#E5F4F5
200
#C9EAEE
300
#A2DCE2
400
#6FC9D2
500
#3DB5C2
600
#31919B
700
#27747C
800
#1E5B61
900
#1A4347
950
#102A2D

Contrast Checker

Text on white

2.01:1

AA Fail AAA Fail

Text on black

10.45:1

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