#666EFD

#666EFD

Color Values

HEX

#666EFD

RGB

102, 110, 253

HSL

236.8, 97.4%, 69.6%

HSV

236.8, 59.7%, 99.2%

CMYK

59.7%, 56.5%, 0.0%, 0.8%

OKLCH

0.6102 0.2091 275.9

Properties

Cool Light Nearest: slateblue 1

Color Harmonies

Complementary

#666EFD

#FDF566

Analogous

#66BAFD

#A966FD

#666EFD

Triadic

#666EFD

#FD666E

#6EFD66

Split Complementary

#666EFD

#FDA966

#BAFD66

Tetradic

#666EFD

#FD66BA

#FDF566

#66FDA9

Color Blindness Simulation

Original

#666EFD

Protanopia

#696ADA

Deuteranopia

#6968D2

Tritanopia

#66BFB9

Achromatopsia

#777777

CSS Usage

background-color: #666EFD;
color: #666EFD;
border-color: #666EFD;
Nearest Tailwind: Indigo 500 #6366F1

Tailwind Shades

50
#F1F2FE
100
#DEE0FC
200
#B9BCFE
300
#868DFD
400
#454FFD
500
#0311FC
600
#030DC9
700
#020BA1
800
#02087E
900
#060B5B
950
#040739

Contrast Checker

Text on white

4.03:1

AA Fail AAA Fail

Text on black

5.21:1

AA Pass AAA Fail

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