#646A7F

#646A7F

Color Values

HEX

#646A7F

RGB

100, 106, 127

HSL

226.7, 11.9%, 44.5%

HSV

226.7, 21.3%, 49.8%

CMYK

21.3%, 16.5%, 0.0%, 50.2%

OKLCH

0.5269 0.0338 272.7

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#646A7F

#7F7964

Analogous

#64777F

#6B647F

#646A7F

Triadic

#646A7F

#7F646A

#6A7F64

Split Complementary

#646A7F

#7F6B64

#777F64

Tetradic

#646A7F

#7F6477

#7F7964

#647F6B

Color Blindness Simulation

Original

#646A7F

Protanopia

#67677A

Deuteranopia

#666679

Tritanopia

#647675

Achromatopsia

#6A6A6A

CSS Usage

background-color: #646A7F;
color: #646A7F;
border-color: #646A7F;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F7F7F8
100
#EBECEF
200
#D7D9E0
300
#BBBEC9
400
#959AAC
500
#70778F
600
#5A5F72
700
#484C5B
800
#383C47
900
#2B2E36
950
#1B1D22

Contrast Checker

Text on white

5.37:1

AA Pass AAA Fail

Text on black

3.91:1

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