#643F87

#643F87

Color Values

HEX

#643F87

RGB

100, 63, 135

HSL

270,8, 36,4%, 38,8%

HSV

270,8, 53,3%, 52,9%

CMYK

25,9%, 53,3%, 0,0%, 47,1%

OKLCH

0,4441 0,119 305,9

Properties

Cool Dark Nearest: mediumpurple 4

Color Harmonies

Complementary

#643F87

#62873F

Analogous

#403F87

#873F86

#643F87

Triadic

#643F87

#87643F

#3F8764

Split Complementary

#643F87

#86873F

#3F8740

Tetradic

#643F87

#87403F

#62873F

#3F8687

Color Blindness Simulation

Original

#643F87

Protanopia

#545476

Deuteranopia

#565971

Tritanopia

#626865

Achromatopsia

#4C4C4C

CSS Usage

background-color: #643F87;
color: #643F87;
border-color: #643F87;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F7F5FA
100
#EDE8F3
200
#DCCEE8
300
#C2ACD8
400
#A27EC3
500
#8151AE
600
#67418B
700
#52346F
800
#402957
900
#312140
950
#1F1529

Contrast Checker

Text on white

8,07:1

AA Pass AAA Pass

Text on black

2,6:1

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