#646B85

#646B85

Color Values

HEX

#646B85

RGB

100, 107, 133

HSL

227.3, 14.2%, 45.7%

HSV

227.3, 24.8%, 52.2%

CMYK

24.8%, 19.5%, 0.0%, 47.8%

OKLCH

0.5316 0.0418 273.1

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#646B85

#857E64

Analogous

#647C85

#6E6485

#646B85

Triadic

#646B85

#85646B

#6B8564

Split Complementary

#646B85

#856E64

#7C8564

Tetradic

#646B85

#85647C

#857E64

#64856E

Color Blindness Simulation

Original

#646B85

Protanopia

#67677F

Deuteranopia

#67667D

Tritanopia

#647A79

Achromatopsia

#6B6B6B

CSS Usage

background-color: #646B85;
color: #646B85;
border-color: #646B85;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F7F8
100
#EBECEF
200
#D6D8E0
300
#B9BDCA
400
#9399AE
500
#6D7592
600
#585E74
700
#464B5D
800
#373B49
900
#2A2D37
950
#1B1C23

Contrast Checker

Text on white

5.27:1

AA Pass AAA Fail

Text on black

3.98:1

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