#643D83

#643D83

Color Values

HEX

#643D83

RGB

100, 61, 131

HSL

273,4, 36,5%, 37,6%

HSV

273,4, 53,4%, 51,4%

CMYK

23,7%, 53,4%, 0,0%, 48,6%

OKLCH

0,4382 0,1173 308,0

Properties

Cool Dark Nearest: mediumpurple 4

Color Harmonies

Complementary

#643D83

#5C833D

Analogous

#413D83

#833D7F

#643D83

Triadic

#643D83

#83643D

#3D8364

Split Complementary

#643D83

#7F833D

#3D8341

Tetradic

#643D83

#83413D

#5C833D

#3D7F83

Color Blindness Simulation

Original

#643D83

Protanopia

#535372

Deuteranopia

#55586E

Tritanopia

#626562

Achromatopsia

#4A4A4A

CSS Usage

background-color: #643D83;
color: #643D83;
border-color: #643D83;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F8F5FA
100
#EEE8F3
200
#DDCEE8
300
#C4ABD8
400
#A57EC3
500
#8551AE
600
#6A418B
700
#55346F
800
#422857
900
#322140
950
#201529

Contrast Checker

Text on white

8,28:1

AA Pass AAA Pass

Text on black

2,54:1

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