#121941

#121941

Color Values

HEX

#121941

RGB

18, 25, 65

HSL

231.1, 56.6%, 16.3%

HSV

231.1, 72.3%, 25.5%

CMYK

72.3%, 61.5%, 0.0%, 74.5%

OKLCH

0.2339 0.0761 271.8

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#121941

#413A12

Analogous

#123141

#231241

#121941

Triadic

#121941

#411219

#194112

Split Complementary

#121941

#412312

#314112

Tetradic

#121941

#411231

#413A12

#124123

Color Blindness Simulation

Original

#121941

Protanopia

#151537

Deuteranopia

#151435

Tritanopia

#12302E

Achromatopsia

#1A1A1A

CSS Usage

background-color: #121941;
color: #121941;
border-color: #121941;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F5FB
100
#E5E7F6
200
#C7CDF0
300
#9FA9E4
400
#6B7BD6
500
#374DC8
600
#2C3DA0
700
#233180
800
#1C2664
900
#181F49
950
#0F142E

Contrast Checker

Text on white

16.92:1

AA Pass AAA Pass

Text on black

1.24:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026