#665EE4

#665EE4

Color Values

HEX

#665EE4

RGB

102, 94, 228

HSL

243.6, 71.3%, 63.1%

HSV

243.6, 58.8%, 89.4%

CMYK

55.3%, 58.8%, 0.0%, 10.6%

OKLCH

0.564 0.1966 280.7

Properties

Cool Dark Nearest: slateblue 2

Color Harmonies

Complementary

#665EE4

#DCE45E

Analogous

#5E99E4

#A95EE4

#665EE4

Triadic

#665EE4

#E4665E

#5EE466

Split Complementary

#665EE4

#E4A95E

#99E45E

Tetradic

#665EE4

#E45E99

#DCE45E

#5EE4A9

Color Blindness Simulation

Original

#665EE4

Protanopia

#6362C4

Deuteranopia

#6364BC

Tritanopia

#66AAA4

Achromatopsia

#696969

CSS Usage

background-color: #665EE4;
color: #665EE4;
border-color: #665EE4;
Nearest Tailwind: Indigo 500 #6366F1

Tailwind Shades

50
#F3F3FC
100
#E4E2F8
200
#C5C2F5
300
#9B96ED
400
#655DE4
500
#3025DA
600
#261DAF
700
#1E178C
800
#18126D
900
#151150
950
#0D0B32

Contrast Checker

Text on white

4.9:1

AA Pass AAA Fail

Text on black

4.29:1

AA Fail 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