#121B8F

#121B8F

Color Values

HEX

#121B8F

RGB

18, 27, 143

HSL

235.7, 77.6%, 31.6%

HSV

235.7, 87.4%, 56.1%

CMYK

87.4%, 81.1%, 0.0%, 43.9%

OKLCH

0.3245 0.1829 267.8

Properties

Cool Dark Nearest: navy

Color Harmonies

Complementary

#121B8F

#8F8612

Analogous

#125A8F

#48128F

#121B8F

Triadic

#121B8F

#8F121B

#1B8F12

Split Complementary

#121B8F

#8F4812

#5A8F12

Tetradic

#121B8F

#8F125A

#8F8612

#128F48

Color Blindness Simulation

Original

#121B8F

Protanopia

#161673

Deuteranopia

#15156C

Tritanopia

#125D58

Achromatopsia

#212121

CSS Usage

background-color: #121B8F;
color: #121B8F;
border-color: #121B8F;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F2F3FC
100
#E1E3F9
200
#C0C4F7
300
#9299F1
400
#5762EA
500
#1D2BE2
600
#1722B5
700
#121B91
800
#0E1571
900
#0F1352
950
#090C34

Contrast Checker

Text on white

13.3:1

AA Pass AAA Pass

Text on black

1.58:1

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