#645CBC

#645CBC

Color Values

HEX

#645CBC

RGB

100, 92, 188

HSL

245.0, 41.7%, 54.9%

HSV

245.0, 51.1%, 73.7%

CMYK

46.8%, 51.1%, 0.0%, 26.3%

OKLCH

0.5305 0.1459 284.0

Properties

Cool Dark Nearest: NCS S 1050-R90B Blue Violet

Color Harmonies

Complementary

#645CBC

#B4BC5C

Analogous

#5C84BC

#945CBC

#645CBC

Triadic

#645CBC

#BC645C

#5CBC64

Split Complementary

#645CBC

#BC945C

#84BC5C

Tetradic

#645CBC

#BC5C84

#B4BC5C

#5CBC94

Color Blindness Simulation

Original

#645CBC

Protanopia

#6160A5

Deuteranopia

#61629F

Tritanopia

#64928E

Achromatopsia

#656565

CSS Usage

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

Tailwind Shades

50
#F5F5FA
100
#E8E7F3
200
#CFCCEA
300
#ADA8DB
400
#8079C8
500
#534AB5
600
#433B91
700
#353074
800
#2A255A
900
#211E43
950
#15132A

Contrast Checker

Text on white

5.53:1

AA Pass AAA Fail

Text on black

3.8:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026