#646D85

#646D85

Color Values

HEX

#646D85

RGB

100, 109, 133

HSL

223.6, 14.2%, 45.7%

HSV

223.6, 24.8%, 52.2%

CMYK

24.8%, 18.0%, 0.0%, 47.8%

OKLCH

0.5361 0.0393 268.9

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#646D85

#857C64

Analogous

#647E85

#6B6485

#646D85

Triadic

#646D85

#85646D

#6D8564

Split Complementary

#646D85

#856B64

#7E8564

Tetradic

#646D85

#85647E

#857C64

#64856B

Color Blindness Simulation

Original

#646D85

Protanopia

#68687F

Deuteranopia

#67677E

Tritanopia

#647B7A

Achromatopsia

#6D6D6D

CSS Usage

background-color: #646D85;
color: #646D85;
border-color: #646D85;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F7F8
100
#EBECEF
200
#D6D9E0
300
#B9BECA
400
#939BAE
500
#6D7792
600
#585F74
700
#464C5D
800
#373C49
900
#2A2E37
950
#1B1D23

Contrast Checker

Text on white

5.16:1

AA Pass AAA Fail

Text on black

4.07:1

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