#12152E

#12152E

Color Values

HEX

#12152E

RGB

18, 21, 46

HSL

233.6, 43.8%, 12.5%

HSV

233.6, 60.9%, 18.0%

CMYK

60.9%, 54.3%, 0.0%, 82.0%

OKLCH

0.2079 0.0494 276.1

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#12152E

#2E2B12

Analogous

#12232E

#1D122E

#12152E

Triadic

#12152E

#2E1215

#152E12

Split Complementary

#12152E

#2E1D12

#232E12

Tetradic

#12152E

#2E1223

#2E2B12

#122E1D

Color Blindness Simulation

Original

#12152E

Protanopia

#131328

Deuteranopia

#131326

Tritanopia

#122322

Achromatopsia

#161616

CSS Usage

background-color: #12152E;
color: #12152E;
border-color: #12152E;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F5FA
100
#E7E8F4
200
#CCCFEB
300
#A7ADDD
400
#7780CA
500
#4854B7
600
#394393
700
#2E3575
800
#242A5C
900
#1D2144
950
#13152B

Contrast Checker

Text on white

17.91:1

AA Pass AAA Pass

Text on black

1.17:1

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