#66B9FD

#66B9FD

Color Values

HEX

#66B9FD

RGB

102, 185, 253

HSL

207.0, 97.4%, 69.6%

HSV

207.0, 59.7%, 99.2%

CMYK

59.7%, 26.9%, 0.0%, 0.8%

OKLCH

0.7611 0.1275 245.3

Properties

Cool Light Nearest: steelblue 1

Color Harmonies

Complementary

#66B9FD

#FDAA66

Analogous

#66FDF5

#666EFD

#66B9FD

Triadic

#66B9FD

#FD66B9

#B9FD66

Split Complementary

#66B9FD

#FD666E

#FDF566

Tetradic

#66B9FD

#F566FD

#FDAA66

#6EFD66

Color Blindness Simulation

Original

#66B9FD

Protanopia

#8A8BED

Deuteranopia

#857FE9

Tritanopia

#6AE0DD

Achromatopsia

#ACACAC

CSS Usage

background-color: #66B9FD;
color: #66B9FD;
border-color: #66B9FD;
Nearest Tailwind: Sky 500 #0EA5E9

Tailwind Shades

50
#F1F8FE
100
#DEEFFC
200
#B9DFFE
300
#86C8FD
400
#45AAFD
500
#038CFC
600
#0370C9
700
#025AA1
800
#02467E
900
#06355B
950
#042139

Contrast Checker

Text on white

2.12:1

AA Fail AAA Fail

Text on black

9.92:1

AA Pass AAA Pass

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026