#181526

#181526

Color Values

HEX

#181526

RGB

24, 21, 38

HSL

250.6, 28.8%, 11.6%

HSV

250.6, 44.7%, 14.9%

CMYK

36.8%, 44.7%, 0.0%, 85.1%

OKLCH

0.2082 0.0334 291.3

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#181526

#232615

Analogous

#151B26

#211526

#181526

Triadic

#181526

#261815

#152618

Split Complementary

#181526

#262115

#1B2615

Tetradic

#181526

#26151B

#232615

#152621

Color Blindness Simulation

Original

#181526

Protanopia

#171722

Deuteranopia

#171721

Tritanopia

#181F1E

Achromatopsia

#171717

CSS Usage

background-color: #181526;
color: #181526;
border-color: #181526;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F6F5F9
100
#EAE9F2
200
#D5D1E6
300
#B6B0D3
400
#8F85BC
500
#685BA4
600
#534983
700
#423A69
800
#342D52
900
#28243D
950
#191727

Contrast Checker

Text on white

17.89:1

AA Pass AAA Pass

Text on black

1.17:1

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