#666BFD

#666BFD

Color Values

HEX

#666BFD

RGB

102, 107, 253

HSL

238,0, 97,4%, 69,6%

HSV

238,0, 59,7%, 99,2%

CMYK

59,7%, 57,7%, 0,0%, 0,8%

OKLCH

0,605 0,2128 276,5

Properties

Cool Light Nearest: slateblue 1

Color Harmonies

Complementary

#666BFD

#FDF866

Analogous

#66B7FD

#AC66FD

#666BFD

Triadic

#666BFD

#FD666B

#6BFD66

Split Complementary

#666BFD

#FDAC66

#B7FD66

Tetradic

#666BFD

#FD66B7

#FDF866

#66FDAC

Color Blindness Simulation

Original

#666BFD

Protanopia

#6868DA

Deuteranopia

#6868D1

Tritanopia

#66BEB8

Achromatopsia

#747474

CSS Usage

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

Tailwind Shades

50
#F1F1FE
100
#DEDFFC
200
#B9BBFE
300
#868AFD
400
#454BFD
500
#030CFC
600
#0309C9
700
#0207A1
800
#02067E
900
#06095B
950
#040639

Contrast Checker

Text on white

4,13:1

AA Fail AAA Fail

Text on black

5,09:1

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