#181547

#181547

Color Values

HEX

#181547

RGB

24, 21, 71

HSL

243.6, 54.3%, 18.0%

HSV

243.6, 70.4%, 27.8%

CMYK

66.2%, 70.4%, 0.0%, 72.2%

OKLCH

0.2358 0.0902 279.6

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#181547

#444715

Analogous

#152B47

#311547

#181547

Triadic

#181547

#471815

#154718

Split Complementary

#181547

#473115

#2B4715

Tetradic

#181547

#47152B

#444715

#154731

Color Blindness Simulation

Original

#181547

Protanopia

#17173B

Deuteranopia

#171738

Tritanopia

#18312F

Achromatopsia

#191919

CSS Usage

background-color: #181547;
color: #181547;
border-color: #181547;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F4FB
100
#E6E5F5
200
#CAC8EF
300
#A5A1E3
400
#746DD4
500
#433AC5
600
#352F9D
700
#2B257E
800
#211D62
900
#1C1948
950
#11102E

Contrast Checker

Text on white

16.98:1

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