#373FBC

#373FBC

Color Values

HEX

#373FBC

RGB

55, 63, 188

HSL

236.4, 54.7%, 47.6%

HSV

236.4, 70.7%, 73.7%

CMYK

70.7%, 66.5%, 0.0%, 26.3%

OKLCH

0.4465 0.1925 272.8

Properties

Cool Dark Nearest: slateblue 3

Color Harmonies

Complementary

#373FBC

#BCB437

Analogous

#3781BC

#7137BC

#373FBC

Triadic

#373FBC

#BC373F

#3FBC37

Split Complementary

#373FBC

#BC7137

#81BC37

Tetradic

#373FBC

#BC3781

#BCB437

#37BC71

Color Blindness Simulation

Original

#373FBC

Protanopia

#3A3B9E

Deuteranopia

#3A3996

Tritanopia

#378681

Achromatopsia

#464646

CSS Usage

background-color: #373FBC;
color: #373FBC;
border-color: #373FBC;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F4F4FB
100
#E5E6F5
200
#C8CAEF
300
#A0A4E3
400
#6D73D4
500
#3A42C5
600
#2E359E
700
#252A7E
800
#1D2163
900
#191B48
950
#10112E

Contrast Checker

Text on white

8.08:1

AA Pass AAA Pass

Text on black

2.6:1

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