#645C8C

#645C8C

Color Values

HEX

#645C8C

RGB

100, 92, 140

HSL

250.0, 20.7%, 45.5%

HSV

250.0, 34.3%, 54.9%

CMYK

28.6%, 34.3%, 0.0%, 45.1%

OKLCH

0.5024 0.0757 291.1

Properties

Cool Dark Nearest: RAL 4011 Pearl Violet

Color Harmonies

Complementary

#645C8C

#848C5C

Analogous

#5C6C8C

#7C5C8C

#645C8C

Triadic

#645C8C

#8C645C

#5C8C64

Split Complementary

#645C8C

#8C7C5C

#6C8C5C

Tetradic

#645C8C

#8C5C6C

#848C5C

#5C8C7C

Color Blindness Simulation

Original

#645C8C

Protanopia

#616080

Deuteranopia

#61627E

Tritanopia

#647775

Achromatopsia

#616161

CSS Usage

background-color: #645C8C;
color: #645C8C;
border-color: #645C8C;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F6F9
100
#EBEAF0
200
#D6D4E3
300
#B9B5CE
400
#948DB4
500
#6E659A
600
#58517B
700
#464162
800
#37334D
900
#2A2739
950
#1B1924

Contrast Checker

Text on white

6.08:1

AA Pass AAA Fail

Text on black

3.45:1

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