#665AD1

#665AD1

Color Values

HEX

#665AD1

RGB

102, 90, 209

HSL

246.1, 56.4%, 58.6%

HSV

246.1, 56.9%, 82.0%

CMYK

51.2%, 56.9%, 0.0%, 18.0%

OKLCH

0.5432 0.177 283.4

Properties

Cool Dark Nearest: slateblue 3

Color Harmonies

Complementary

#665AD1

#C5D15A

Analogous

#5A89D1

#A25AD1

#665AD1

Triadic

#665AD1

#D1665A

#5AD166

Split Complementary

#665AD1

#D1A25A

#89D15A

Tetradic

#665AD1

#D15A89

#C5D15A

#5AD1A2

Color Blindness Simulation

Original

#665AD1

Protanopia

#6161B4

Deuteranopia

#6262AD

Tritanopia

#659D98

Achromatopsia

#656565

CSS Usage

background-color: #665AD1;
color: #665AD1;
border-color: #665AD1;
Nearest Tailwind: Indigo 500 #6366F1

Tailwind Shades

50
#F4F4FB
100
#E6E5F6
200
#CBC7EF
300
#A69FE4
400
#766BD6
500
#4638C7
600
#382CA0
700
#2D2480
800
#231C64
900
#1D1849
950
#120F2E

Contrast Checker

Text on white

5.32:1

AA Pass AAA Fail

Text on black

3.95:1

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