#12111D

#12111D

Color Values

HEX

#12111D

RGB

18, 17, 29

HSL

245.0, 26.1%, 9.0%

HSV

245.0, 41.4%, 11.4%

CMYK

37.9%, 41.4%, 0.0%, 88.6%

OKLCH

0.1851 0.0243 287.6

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#12111D

#1C1D11

Analogous

#11161D

#18111D

#12111D

Triadic

#12111D

#1D1211

#111D12

Split Complementary

#12111D

#1D1811

#161D11

Tetradic

#12111D

#1D1116

#1C1D11

#111D18

Color Blindness Simulation

Original

#12111D

Protanopia

#12121A

Deuteranopia

#121219

Tritanopia

#121817

Achromatopsia

#121212

CSS Usage

background-color: #12111D;
color: #12111D;
border-color: #12111D;
Nearest Tailwind: Slate 950 #020617

Tailwind Shades

50
#F6F6F9
100
#EAE9F1
200
#D4D2E5
300
#B4B2D2
400
#8C88B9
500
#645EA1
600
#504B81
700
#403C67
800
#322F50
900
#27253C
950
#191726

Contrast Checker

Text on white

18.69:1

AA Pass AAA Pass

Text on black

1.12:1

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