#121745

#121745

Color Values

HEX

#121745

RGB

18, 23, 69

HSL

234.1, 58.6%, 17.1%

HSV

234.1, 73.9%, 27.1%

CMYK

73.9%, 66.7%, 0.0%, 72.9%

OKLCH

0.2332 0.0857 273.1

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#121745

#454012

Analogous

#123145

#271245

#121745

Triadic

#121745

#451217

#174512

Split Complementary

#121745

#452712

#314512

Tetradic

#121745

#451231

#454012

#124527

Color Blindness Simulation

Original

#121745

Protanopia

#14143A

Deuteranopia

#141437

Tritanopia

#12312F

Achromatopsia

#191919

CSS Usage

background-color: #121745;
color: #121745;
border-color: #121745;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F4FB
100
#E4E6F6
200
#C6CAF0
300
#9EA5E6
400
#6974D8
500
#3543CA
600
#2A36A2
700
#222B81
800
#1A2265
900
#171C4A
950
#0E122F

Contrast Checker

Text on white

17.01:1

AA Pass AAA Pass

Text on black

1.23:1

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