#66B3EC

#66B3EC

Color Values

HEX

#66B3EC

RGB

102, 179, 236

HSL

205.5, 77.9%, 66.3%

HSV

205.5, 56.8%, 92.5%

CMYK

56.8%, 24.2%, 0.0%, 7.5%

OKLCH

0.74 0.1128 242.4

Properties

Cool Light Nearest: steelblue 2

Color Harmonies

Complementary

#66B3EC

#EC9F66

Analogous

#66ECE2

#6670EC

#66B3EC

Triadic

#66B3EC

#EC66B3

#B3EC66

Split Complementary

#66B3EC

#EC6670

#ECE266

Tetradic

#66B3EC

#E266EC

#EC9F66

#70EC66

Color Blindness Simulation

Original

#66B3EC

Protanopia

#8788DE

Deuteranopia

#837DDB

Tritanopia

#6AD3D1

Achromatopsia

#A7A7A7

CSS Usage

background-color: #66B3EC;
color: #66B3EC;
border-color: #66B3EC;
Nearest Tailwind: Sky 400 #38BDF8

Tailwind Shades

50
#F2F8FC
100
#E1EFF9
200
#BFDFF7
300
#92C9F1
400
#57ACEA
500
#1C8EE3
600
#1772B5
700
#125B91
800
#0E4771
900
#0E3652
950
#092234

Contrast Checker

Text on white

2.28:1

AA Fail AAA Fail

Text on black

9.22:1

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