#643B82

#643B82

Color Values

HEX

#643B82

RGB

100, 59, 130

HSL

274.6, 37.6%, 37.1%

HSV

274.6, 54.6%, 51.0%

CMYK

23.1%, 54.6%, 0.0%, 49.0%

OKLCH

0.4342 0.1195 308.9

Properties

Cool Dark Nearest: mediumpurple 4

Color Harmonies

Complementary

#643B82

#59823B

Analogous

#403B82

#823B7D

#643B82

Triadic

#643B82

#82643B

#3B8264

Split Complementary

#643B82

#7D823B

#3B8240

Tetradic

#643B82

#82403B

#59823B

#3B7D82

Color Blindness Simulation

Original

#643B82

Protanopia

#525271

Deuteranopia

#55586D

Tritanopia

#626360

Achromatopsia

#494949

CSS Usage

background-color: #643B82;
color: #643B82;
border-color: #643B82;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F8F5FA
100
#EEE7F3
200
#DDCEE9
300
#C5ABD9
400
#A67DC4
500
#8750AF
600
#6C408C
700
#563370
800
#432858
900
#332041
950
#201429

Contrast Checker

Text on white

8.43:1

AA Pass AAA Pass

Text on black

2.49:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026