#381F51

#381F51

Color Values

HEX

#381F51

RGB

56, 31, 81

HSL

270.0, 44.6%, 22.0%

HSV

270.0, 61.7%, 31.8%

CMYK

30.9%, 61.7%, 0.0%, 68.2%

OKLCH

0.299 0.0897 304.6

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#381F51

#38511F

Analogous

#1F1F51

#511F51

#381F51

Triadic

#381F51

#51381F

#1F5138

Split Complementary

#381F51

#51511F

#1F511F

Tetradic

#381F51

#511F1F

#38511F

#1F5151

Color Blindness Simulation

Original

#381F51

Protanopia

#2D2D45

Deuteranopia

#2F3042

Tritanopia

#373B39

Achromatopsia

#282828

CSS Usage

background-color: #381F51;
color: #381F51;
border-color: #381F51;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F7F4FA
100
#EDE6F4
200
#DBCBEB
300
#C2A7DD
400
#A177CB
500
#8047B8
600
#663993
700
#522D76
800
#40235C
900
#301D44
950
#1F122B

Contrast Checker

Text on white

14.16:1

AA Pass AAA Pass

Text on black

1.48:1

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