#645558

#645558

Color Values

HEX

#645558

RGB

100, 85, 88

HSL

348.0, 8.1%, 36.3%

HSV

348.0, 15.0%, 39.2%

CMYK

0.0%, 15.0%, 12.0%, 60.8%

OKLCH

0.4653 0.0203 4.3

Properties

Warm Dark Nearest: NCS S 7000-N Dark Grey

Color Harmonies

Complementary

#645558

#556461

Analogous

#645560

#645A55

#645558

Triadic

#645558

#586455

#555864

Split Complementary

#645558

#55645A

#556064

Tetradic

#645558

#606455

#556461

#5A5564

Color Blindness Simulation

Original

#645558

Protanopia

#5E5D57

Deuteranopia

#5E6057

Tritanopia

#635757

Achromatopsia

#585858

CSS Usage

background-color: #645558;
color: #645558;
border-color: #645558;
Nearest Tailwind: Stone 600 #57534E

Tailwind Shades

50
#F8F7F7
100
#EEECEC
200
#DED8DA
300
#C7BDBF
400
#A8999C
500
#8A7579
600
#6E5E61
700
#584B4E
800
#453B3D
900
#342D2E
950
#211C1D

Contrast Checker

Text on white

7.04:1

AA Pass AAA Pass

Text on black

2.98:1

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