#644B74

#644B74

Color Values

HEX

#644B74

RGB

100, 75, 116

HSL

276.6, 21.5%, 37.5%

HSV

276.6, 35.3%, 45.5%

CMYK

13.8%, 35.3%, 0.0%, 54.5%

OKLCH

0.4557 0.0716 311.6

Properties

Cool Dark Nearest: RAL 4005 Blue Lilac

Color Harmonies

Complementary

#644B74

#5B744B

Analogous

#504B74

#744B70

#644B74

Triadic

#644B74

#74644B

#4B7464

Split Complementary

#644B74

#70744B

#4B7450

Tetradic

#644B74

#74504B

#5B744B

#4B7074

Color Blindness Simulation

Original

#644B74

Protanopia

#59596A

Deuteranopia

#5B5C68

Tritanopia

#636261

Achromatopsia

#535353

CSS Usage

background-color: #644B74;
color: #644B74;
border-color: #644B74;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F8F6F9
100
#EEEAF0
200
#DDD4E3
300
#C5B5CF
400
#A58CB5
500
#86649B
600
#6B507C
700
#554063
800
#43324D
900
#33273A
950
#201925

Contrast Checker

Text on white

7.5:1

AA Pass AAA Pass

Text on black

2.8:1

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