#665EB5

#665EB5

Color Values

HEX

#665EB5

RGB

102, 94, 181

HSL

245.5, 37.0%, 53.9%

HSV

245.5, 48.1%, 71.0%

CMYK

43.6%, 48.1%, 0.0%, 29.0%

OKLCH

0.5314 0.1329 285.1

Properties

Cool Dark Nearest: Blue Violet

Color Harmonies

Complementary

#665EB5

#ADB55E

Analogous

#5E81B5

#915EB5

#665EB5

Triadic

#665EB5

#B5665E

#5EB566

Split Complementary

#665EB5

#B5915E

#81B55E

Tetradic

#665EB5

#B55E81

#ADB55E

#5EB591

Color Blindness Simulation

Original

#665EB5

Protanopia

#6362A0

Deuteranopia

#63649B

Tritanopia

#668F8C

Achromatopsia

#666666

CSS Usage

background-color: #665EB5;
color: #665EB5;
border-color: #665EB5;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E9E8F3
200
#D1CEE9
300
#AFABD8
400
#847EC4
500
#5950AF
600
#47408C
700
#393370
800
#2C2857
900
#232041
950
#161429

Contrast Checker

Text on white

5.48:1

AA Pass AAA Fail

Text on black

3.83:1

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