#121753

#121753

Color Values

HEX

#121753

RGB

18, 23, 83

HSL

235.4, 64.4%, 19.8%

HSV

235.4, 78.3%, 32.5%

CMYK

78.3%, 72.3%, 0.0%, 67.5%

OKLCH

0.2476 0.1073 272.0

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#121753

#534E12

Analogous

#123753

#2E1253

#121753

Triadic

#121753

#531217

#175312

Split Complementary

#121753

#532E12

#375312

Tetradic

#121753

#531237

#534E12

#12532E

Color Blindness Simulation

Original

#121753

Protanopia

#141444

Deuteranopia

#141441

Tritanopia

#123936

Achromatopsia

#1A1A1A

CSS Usage

background-color: #121753;
color: #121753;
border-color: #121753;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F3F4FC
100
#E3E5F7
200
#C4C8F2
300
#9AA0E9
400
#646DDD
500
#2D3AD2
600
#242EA8
700
#1D2586
800
#171D69
900
#14194D
950
#0D1030

Contrast Checker

Text on white

16.49:1

AA Pass AAA Pass

Text on black

1.27:1

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