#646880

#646880

Color Values

HEX

#646880

RGB

100, 104, 128

HSL

231.4, 12.3%, 44.7%

HSV

231.4, 21.9%, 50.2%

CMYK

21.9%, 18.8%, 0.0%, 49.8%

OKLCH

0.5228 0.0381 277.6

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#646880

#807C64

Analogous

#647680

#6E6480

#646880

Triadic

#646880

#806468

#688064

Split Complementary

#646880

#806E64

#768064

Tetradic

#646880

#806476

#807C64

#64806E

Color Blindness Simulation

Original

#646880

Protanopia

#66667A

Deuteranopia

#666579

Tritanopia

#647675

Achromatopsia

#696969

CSS Usage

background-color: #646880;
color: #646880;
border-color: #646880;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F7F7F8
100
#EBECEF
200
#D7D8E0
300
#BABCC9
400
#9598AC
500
#70748F
600
#595D73
700
#484A5C
800
#383A48
900
#2B2D36
950
#1B1C22

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

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026