#66599D

#66599D

Color Values

HEX

#66599D

RGB

102, 89, 157

HSL

251.5, 27.6%, 48.2%

HSV

251.5, 43.3%, 61.6%

CMYK

35.0%, 43.3%, 0.0%, 38.4%

OKLCH

0.5073 0.1061 290.9

Properties

Cool Dark Nearest: mediumpurple 4

Color Harmonies

Complementary

#66599D

#909D59

Analogous

#596E9D

#88599D

#66599D

Triadic

#66599D

#9D6659

#599D66

Split Complementary

#66599D

#9D8859

#6E9D59

Tetradic

#66599D

#9D596E

#909D59

#599D88

Color Blindness Simulation

Original

#66599D

Protanopia

#60608D

Deuteranopia

#616289

Tritanopia

#65807D

Achromatopsia

#616161

CSS Usage

background-color: #66599D;
color: #66599D;
border-color: #66599D;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F6F6F9
100
#EBE9F1
200
#D5D1E5
300
#B7B1D3
400
#9187BB
500
#6A5CA3
600
#554A82
700
#443B68
800
#352E51
900
#29243C
950
#1A1726

Contrast Checker

Text on white

6.03:1

AA Pass AAA Fail

Text on black

3.48:1

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