#181741

#181741

Color Values

HEX

#181741

RGB

24, 23, 65

HSL

241.4, 47.7%, 17.3%

HSV

241.4, 64.6%, 25.5%

CMYK

63.1%, 64.6%, 0.0%, 74.5%

OKLCH

0.2343 0.0775 279.6

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#181741

#404117

Analogous

#172B41

#2D1741

#181741

Triadic

#181741

#411817

#174118

Split Complementary

#181741

#412D17

#2B4117

Tetradic

#181741

#41172B

#404117

#17412D

Color Blindness Simulation

Original

#181741

Protanopia

#181837

Deuteranopia

#181834

Tritanopia

#182F2D

Achromatopsia

#1A1A1A

CSS Usage

background-color: #181741;
color: #181741;
border-color: #181741;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F4FA
100
#E6E6F4
200
#CBCAEC
300
#A6A5DF
400
#7674CE
500
#4643BC
600
#383597
700
#2C2B79
800
#23215E
900
#1D1C45
950
#12112C

Contrast Checker

Text on white

16.97:1

AA Pass AAA Pass

Text on black

1.24:1

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