#121B4D

#121B4D

Color Values

HEX

#121B4D

RGB

18, 27, 77

HSL

230.8, 62.1%, 18.6%

HSV

230.8, 76.6%, 30.2%

CMYK

76.6%, 64.9%, 0.0%, 69.8%

OKLCH

0.2498 0.0926 270.4

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#121B4D

#4D4412

Analogous

#12384D

#26124D

#121B4D

Triadic

#121B4D

#4D121B

#1B4D12

Split Complementary

#121B4D

#4D2612

#384D12

Tetradic

#121B4D

#4D1238

#4D4412

#124D26

Color Blindness Simulation

Original

#121B4D

Protanopia

#161641

Deuteranopia

#15153E

Tritanopia

#123735

Achromatopsia

#1D1D1D

CSS Usage

background-color: #121B4D;
color: #121B4D;
border-color: #121B4D;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F3F5FB
100
#E4E7F7
200
#C5CCF1
300
#9CA7E8
400
#6678DB
500
#3049CF
600
#273AA5
700
#1F2E84
800
#182467
900
#151E4C
950
#0D1330

Contrast Checker

Text on white

16.28:1

AA Pass AAA Pass

Text on black

1.29:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026