#645F87

#645F87

Color Values

HEX

#645F87

RGB

100, 95, 135

HSL

247.5, 17.4%, 45.1%

HSV

247.5, 29.6%, 52.9%

CMYK

25.9%, 29.6%, 0.0%, 47.1%

OKLCH

0.5062 0.0631 289.7

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#645F87

#82875F

Analogous

#5F6E87

#785F87

#645F87

Triadic

#645F87

#87645F

#5F8764

Split Complementary

#645F87

#87785F

#6E875F

Tetradic

#645F87

#875F6E

#82875F

#5F8778

Color Blindness Simulation

Original

#645F87

Protanopia

#62627D

Deuteranopia

#62627B

Tritanopia

#647674

Achromatopsia

#636363

CSS Usage

background-color: #645F87;
color: #645F87;
border-color: #645F87;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F7F6F8
100
#EBEBF0
200
#D7D5E2
300
#BAB7CC
400
#9490B1
500
#6F6996
600
#595478
700
#474360
800
#37354B
900
#2B2938
950
#1B1A23

Contrast Checker

Text on white

5.95:1

AA Pass AAA Fail

Text on black

3.53:1

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