#121027

#121027

Color Values

HEX

#121027

RGB

18, 16, 39

HSL

245.2, 41.8%, 10.8%

HSV

245.2, 59.0%, 15.3%

CMYK

53.8%, 59.0%, 0.0%, 84.7%

OKLCH

0.1896 0.0456 285.1

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#121027

#252710

Analogous

#101A27

#1E1027

#121027

Triadic

#121027

#271210

#102712

Split Complementary

#121027

#271E10

#1A2710

Tetradic

#121027

#27101A

#252710

#10271E

Color Blindness Simulation

Original

#121027

Protanopia

#111121

Deuteranopia

#111120

Tritanopia

#121D1C

Achromatopsia

#121212

CSS Usage

background-color: #121027;
color: #121027;
border-color: #121027;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F5FA
100
#E8E7F3
200
#CFCCEA
300
#ADA8DB
400
#8079C8
500
#534AB5
600
#433B91
700
#352F74
800
#2A255A
900
#211E43
950
#15132A

Contrast Checker

Text on white

18.6:1

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