#121D33

#121D33

Color Values

HEX

#121D33

RGB

18, 29, 51

HSL

220.0, 47.8%, 13.5%

HSV

220.0, 64.7%, 20.0%

CMYK

64.7%, 43.1%, 0.0%, 80.0%

OKLCH

0.2329 0.0456 263.1

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#121D33

#332812

Analogous

#122D33

#171233

#121D33

Triadic

#121D33

#33121D

#1D3312

Split Complementary

#121D33

#331712

#2D3312

Tetradic

#121D33

#33122D

#332812

#123317

Color Blindness Simulation

Original

#121D33

Protanopia

#17172E

Deuteranopia

#16152C

Tritanopia

#132929

Achromatopsia

#1C1C1C

CSS Usage

background-color: #121D33;
color: #121D33;
border-color: #121D33;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F4F6FA
100
#E6EBF4
200
#CAD6EC
300
#A5B8DF
400
#7492CE
500
#436BBC
600
#355697
700
#2B4579
800
#21365E
900
#1C2A45
950
#111A2C

Contrast Checker

Text on white

16.81:1

AA Pass AAA Pass

Text on black

1.25:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026