#121B2D

#121B2D

Color Values

HEX

#121B2D

RGB

18, 27, 45

HSL

220.0, 42.9%, 12.4%

HSV

220.0, 60.0%, 17.6%

CMYK

60.0%, 40.0%, 0.0%, 82.4%

OKLCH

0.2233 0.0378 263.4

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#121B2D

#2D2412

Analogous

#12292D

#17122D

#121B2D

Triadic

#121B2D

#2D121B

#1B2D12

Split Complementary

#121B2D

#2D1712

#292D12

Tetradic

#121B2D

#2D1229

#2D2412

#122D17

Color Blindness Simulation

Original

#121B2D

Protanopia

#161629

Deuteranopia

#151528

Tritanopia

#122524

Achromatopsia

#1A1A1A

CSS Usage

background-color: #121B2D;
color: #121B2D;
border-color: #121B2D;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F6FA
100
#E7EBF4
200
#CCD6EB
300
#A8B9DC
400
#7893C9
500
#496DB6
600
#3A5792
700
#2F4675
800
#24375B
900
#1E2A43
950
#131B2A

Contrast Checker

Text on white

17.21:1

AA Pass AAA Pass

Text on black

1.22:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026