#181B3F

#181B3F

Color Values

HEX

#181B3F

RGB

24, 27, 63

HSL

235.4, 44.8%, 17.1%

HSV

235.4, 61.9%, 24.7%

CMYK

61.9%, 57.1%, 0.0%, 75.3%

OKLCH

0.2417 0.0676 276.5

Properties

Cool Dark Nearest: RAL 5022 Night Blue

Color Harmonies

Complementary

#181B3F

#3F3C18

Analogous

#182F3F

#29183F

#181B3F

Triadic

#181B3F

#3F181B

#1B3F18

Split Complementary

#181B3F

#3F2918

#2F3F18

Tetradic

#181B3F

#3F182F

#3F3C18

#183F29

Color Blindness Simulation

Original

#181B3F

Protanopia

#191936

Deuteranopia

#191934

Tritanopia

#182F2E

Achromatopsia

#1D1D1D

CSS Usage

background-color: #181B3F;
color: #181B3F;
border-color: #181B3F;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F4F5FA
100
#E6E7F4
200
#CBCEEB
300
#A6ABDD
400
#767DCB
500
#464FB9
600
#383F94
700
#2D3376
800
#23285C
900
#1D2044
950
#12142B

Contrast Checker

Text on white

16.57:1

AA Pass AAA Pass

Text on black

1.27:1

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