#121125

#121125

Color Values

HEX

#121125

RGB

18, 17, 37

HSL

243.0, 37.0%, 10.6%

HSV

243.0, 54.1%, 14.5%

CMYK

51.4%, 54.1%, 0.0%, 85.5%

OKLCH

0.1906 0.0399 284.2

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#121125

#242511

Analogous

#111A25

#1C1125

#121125

Triadic

#121125

#251211

#112512

Split Complementary

#121125

#251C11

#1A2511

Tetradic

#121125

#25111A

#242511

#11251C

Color Blindness Simulation

Original

#121125

Protanopia

#121220

Deuteranopia

#12121F

Tritanopia

#121C1C

Achromatopsia

#131313

CSS Usage

background-color: #121125;
color: #121125;
border-color: #121125;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F5FA
100
#E8E8F3
200
#CFCEE9
300
#ADABD8
400
#817EC4
500
#5550AF
600
#44408C
700
#363370
800
#2B2857
900
#222041
950
#151429

Contrast Checker

Text on white

18.54:1

AA Pass AAA Pass

Text on black

1.13:1

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