#666FF2

#666FF2

Color Values

HEX

#666FF2

RGB

102, 111, 242

HSL

236.1, 84.3%, 67.5%

HSV

236.1, 57.9%, 94.9%

CMYK

57.9%, 54.1%, 0.0%, 5.1%

OKLCH

0.6041 0.1935 276.0

Properties

Cool Light Nearest: royalblue 2

Color Harmonies

Complementary

#666FF2

#F2E966

Analogous

#66B5F2

#A366F2

#666FF2

Triadic

#666FF2

#F2666F

#6FF266

Split Complementary

#666FF2

#F2A366

#B5F266

Tetradic

#666FF2

#F266B5

#F2E966

#66F2A3

Color Blindness Simulation

Original

#666FF2

Protanopia

#6A6AD2

Deuteranopia

#6969CB

Tritanopia

#66B9B4

Achromatopsia

#777777

CSS Usage

background-color: #666FF2;
color: #666FF2;
border-color: #666FF2;
Nearest Tailwind: Indigo 500 #6366F1

Tailwind Shades

50
#F2F3FD
100
#E0E2FA
200
#BDC1F9
300
#8E95F5
400
#515BF0
500
#1422EB
600
#101BBC
700
#0D1696
800
#0A1175
900
#0C1055
950
#070A36

Contrast Checker

Text on white

4.1:1

AA Fail AAA Fail

Text on black

5.12:1

AA Pass AAA Fail

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