#3731BC

#3731BC

Color Values

HEX

#3731BC

RGB

55, 49, 188

HSL

242.6, 58.6%, 46.5%

HSV

242.6, 73.9%, 73.7%

CMYK

70.7%, 73.9%, 0.0%, 26.3%

OKLCH

0.4249 0.2074 274.9

Properties

Cool Dark Nearest: Purple Heart

Color Harmonies

Complementary

#3731BC

#B6BC31

Analogous

#3171BC

#7D31BC

#3731BC

Triadic

#3731BC

#BC3731

#31BC37

Split Complementary

#3731BC

#BC7D31

#71BC31

Tetradic

#3731BC

#BC3171

#B6BC31

#31BC7D

Color Blindness Simulation

Original

#3731BC

Protanopia

#34349A

Deuteranopia

#353592

Tritanopia

#37807A

Achromatopsia

#3C3C3C

CSS Usage

background-color: #3731BC;
color: #3731BC;
border-color: #3731BC;
Nearest Tailwind: Indigo 700 #4338CA

Tailwind Shades

50
#F4F4FB
100
#E5E4F6
200
#C8C6F0
300
#A19EE6
400
#6E69D8
500
#3B35CA
600
#2F2AA2
700
#262281
800
#1E1A65
900
#19174A
950
#100E2F

Contrast Checker

Text on white

9.02:1

AA Pass AAA Pass

Text on black

2.33:1

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