#4243BB

#4243BB

Color Values

HEX

#4243BB

RGB

66, 67, 187

HSL

239.5, 47.8%, 49.6%

HSV

239.5, 64.7%, 73.3%

CMYK

64.7%, 64.2%, 0.0%, 26.7%

OKLCH

0.4593 0.1838 276.0

Properties

Cool Dark Nearest: slateblue 3

Color Harmonies

Complementary

#4243BB

#BBBA42

Analogous

#427FBB

#7D42BB

#4243BB

Triadic

#4243BB

#BB4243

#43BB42

Split Complementary

#4243BB

#BB7D42

#7FBB42

Tetradic

#4243BB

#BB427F

#BBBA42

#42BB7D

Color Blindness Simulation

Original

#4243BB

Protanopia

#42429E

Deuteranopia

#424297

Tritanopia

#428782

Achromatopsia

#4B4B4B

CSS Usage

background-color: #4243BB;
color: #4243BB;
border-color: #4243BB;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F4F4FA
100
#E6E6F4
200
#CACBEC
300
#A5A5DF
400
#7474CE
500
#4344BC
600
#353697
700
#2B2B79
800
#21225E
900
#1C1C45
950
#11122C

Contrast Checker

Text on white

7.63:1

AA Pass AAA Pass

Text on black

2.75:1

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