#665C91

#665C91

Color Values

HEX

#665C91

RGB

102, 92, 145

HSL

251.3, 22.4%, 46.5%

HSV

251.3, 36.6%, 56.9%

CMYK

29.7%, 36.6%, 0.0%, 43.1%

OKLCH

0.5067 0.0834 291.8

Properties

Cool Dark Nearest: RAL 4011 Pearl Violet

Color Harmonies

Complementary

#665C91

#87915C

Analogous

#5C6D91

#815C91

#665C91

Triadic

#665C91

#91665C

#5C9166

Split Complementary

#665C91

#91815C

#6D915C

Tetradic

#665C91

#915C6D

#87915C

#5C9181

Color Blindness Simulation

Original

#665C91

Protanopia

#626284

Deuteranopia

#626381

Tritanopia

#657A78

Achromatopsia

#626262

CSS Usage

background-color: #665C91;
color: #665C91;
border-color: #665C91;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F6F9
100
#EBEAF1
200
#D6D3E3
300
#B9B4D0
400
#938CB6
500
#6E639C
600
#584F7D
700
#463F64
800
#37314E
900
#2A273A
950
#1B1825

Contrast Checker

Text on white

5.99:1

AA Pass AAA Fail

Text on black

3.5:1

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