#645BCA

#645BCA

Color Values

HEX

#645BCA

RGB

100, 91, 202

HSL

244.9, 51.2%, 57.5%

HSV

244.9, 55.0%, 79.2%

CMYK

50.5%, 55.0%, 0.0%, 20.8%

OKLCH

0.5383 0.1665 282.9

Properties

Cool Dark Nearest: slateblue

Color Harmonies

Complementary

#645BCA

#C1CA5B

Analogous

#5B8ACA

#9C5BCA

#645BCA

Triadic

#645BCA

#CA645B

#5BCA64

Split Complementary

#645BCA

#CA9C5B

#8ACA5B

Tetradic

#645BCA

#CA5B8A

#C1CA5B

#5BCA9C

Color Blindness Simulation

Original

#645BCA

Protanopia

#6060AF

Deuteranopia

#6161A9

Tritanopia

#649A95

Achromatopsia

#656565

CSS Usage

background-color: #645BCA;
color: #645BCA;
border-color: #645BCA;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F5F4FB
100
#E7E5F5
200
#CCC9EE
300
#A8A2E1
400
#7870D1
500
#493EC1
600
#3A329A
700
#2F287B
800
#241F60
900
#1E1A47
950
#13102D

Contrast Checker

Text on white

5.4:1

AA Pass AAA Fail

Text on black

3.89:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026