#181C40

#181C40

Color Values

HEX

#181C40

RGB

24, 28, 64

HSL

234.0, 45.5%, 17.3%

HSV

234.0, 62.5%, 25.1%

CMYK

62.5%, 56.2%, 0.0%, 74.9%

OKLCH

0.2449 0.0677 275.5

Properties

Cool Dark Nearest: RAL 5022 Night Blue

Color Harmonies

Complementary

#181C40

#403C18

Analogous

#183040

#281840

#181C40

Triadic

#181C40

#40181C

#1C4018

Split Complementary

#181C40

#402818

#304018

Tetradic

#181C40

#401830

#403C18

#184028

Color Blindness Simulation

Original

#181C40

Protanopia

#1A1A37

Deuteranopia

#1A1935

Tritanopia

#18302F

Achromatopsia

#1E1E1E

CSS Usage

background-color: #181C40;
color: #181C40;
border-color: #181C40;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F4F5FA
100
#E6E8F4
200
#CBCEEC
300
#A6ACDE
400
#767ECC
500
#4551BA
600
#384194
700
#2C3477
800
#23295D
900
#1D2144
950
#12152B

Contrast Checker

Text on white

16.42:1

AA Pass AAA Pass

Text on black

1.28:1

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