#121C31

#121C31

Color Values

HEX

#121C31

RGB

18, 28, 49

HSL

220.6, 46.3%, 13.1%

HSV

220.6, 63.3%, 19.2%

CMYK

63.3%, 42.9%, 0.0%, 80.8%

OKLCH

0.2287 0.0435 264.0

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#121C31

#312712

Analogous

#122B31

#171231

#121C31

Triadic

#121C31

#31121C

#1C3112

Split Complementary

#121C31

#311712

#2B3112

Tetradic

#121C31

#31122B

#312712

#123117

Color Blindness Simulation

Original

#121C31

Protanopia

#16162C

Deuteranopia

#16152B

Tritanopia

#122827

Achromatopsia

#1B1B1B

CSS Usage

background-color: #121C31;
color: #121C31;
border-color: #121C31;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F4F6FA
100
#E6EBF4
200
#CBD5EC
300
#A5B8DE
400
#7591CC
500
#446BBB
600
#375595
700
#2C4477
800
#22355D
900
#1C2945
950
#121A2B

Contrast Checker

Text on white

16.99:1

AA Pass AAA Pass

Text on black

1.24:1

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