#643F6B

#643F6B

Color Values

HEX

#643F6B

RGB

100, 63, 107

HSL

290.5, 25.9%, 33.3%

HSV

290.5, 41.1%, 42.0%

CMYK

6.5%, 41.1%, 0.0%, 58.0%

OKLCH

0.4283 0.0836 321.1

Properties

Cool Dark Nearest: RAL 4005 Blue Lilac

Color Harmonies

Complementary

#643F6B

#466B3F

Analogous

#4E3F6B

#6B3F5C

#643F6B

Triadic

#643F6B

#6B643F

#3F6B64

Split Complementary

#643F6B

#5C6B3F

#3F6B4E

Tetradic

#643F6B

#6B4E3F

#466B3F

#3F5C6B

Color Blindness Simulation

Original

#643F6B

Protanopia

#545460

Deuteranopia

#56595E

Tritanopia

#625856

Achromatopsia

#4A4A4A

CSS Usage

background-color: #643F6B;
color: #643F6B;
border-color: #643F6B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F9F6F9
100
#F0E9F1
200
#E2D2E5
300
#CDB2D2
400
#B188B9
500
#965EA1
600
#784C80
700
#603C67
800
#4B2F50
900
#38253C
950
#231726

Contrast Checker

Text on white

8.52:1

AA Pass AAA Pass

Text on black

2.47:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026