#3731A4

#3731A4

Color Values

HEX

#3731A4

RGB

55, 49, 164

HSL

243.1, 54.0%, 41.8%

HSV

243.1, 70.1%, 64.3%

CMYK

66.5%, 70.1%, 0.0%, 35.7%

OKLCH

0.401 0.1775 277.1

Properties

Cool Dark Nearest: NCS S 2050-R70B Violet

Color Harmonies

Complementary

#3731A4

#9EA431

Analogous

#3165A4

#7131A4

#3731A4

Triadic

#3731A4

#A43731

#31A437

Split Complementary

#3731A4

#A47131

#65A431

Tetradic

#3731A4

#A43165

#9EA431

#31A471

Color Blindness Simulation

Original

#3731A4

Protanopia

#343488

Deuteranopia

#353582

Tritanopia

#37726D

Achromatopsia

#3B3B3B

CSS Usage

background-color: #3731A4;
color: #3731A4;
border-color: #3731A4;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F4F4FB
100
#E6E5F5
200
#CAC8EF
300
#A4A1E3
400
#736ED4
500
#423BC4
600
#352F9D
700
#2A267E
800
#211D62
900
#1B1948
950
#11102D

Contrast Checker

Text on white

9.82:1

AA Pass AAA Pass

Text on black

2.14:1

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