#6566CC

#6566CC

Color Values

HEX

#6566CC

RGB

101, 102, 204

HSL

239.4, 50.2%, 59.8%

HSV

239.4, 50.5%, 80.0%

CMYK

50.5%, 50.0%, 0.0%, 20.0%

OKLCH

0.5607 0.154 279.8

Properties

Cool Dark Nearest: NCS S 1050-R90B Blue Violet

Color Harmonies

Complementary

#6566CC

#CCCB65

Analogous

#659ACC

#9765CC

#6566CC

Triadic

#6566CC

#CC6566

#66CC65

Split Complementary

#6566CC

#CC9765

#9ACC65

Tetradic

#6566CC

#CC659A

#CCCB65

#65CC97

Color Blindness Simulation

Original

#6566CC

Protanopia

#6565B3

Deuteranopia

#6565AD

Tritanopia

#65A09C

Achromatopsia

#6D6D6D

CSS Usage

background-color: #6566CC;
color: #6566CC;
border-color: #6566CC;
Nearest Tailwind: Indigo 400 #818CF8

Tailwind Shades

50
#F4F4FB
100
#E6E6F5
200
#C9CAED
300
#A3A4E1
400
#7172D0
500
#3F41C0
600
#333499
700
#29297B
800
#202060
900
#1B1B46
950
#11112C

Contrast Checker

Text on white

4.85:1

AA Pass AAA Fail

Text on black

4.33:1

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