#121F33

#121F33

Color Values

HEX

#121F33

RGB

18, 31, 51

HSL

216.4, 47.8%, 13.5%

HSV

216.4, 64.7%, 20.0%

CMYK

64.7%, 39.2%, 0.0%, 80.0%

OKLCH

0.2384 0.0428 258.7

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#121F33

#332612

Analogous

#122F33

#151233

#121F33

Triadic

#121F33

#33121F

#1F3312

Split Complementary

#121F33

#331512

#2F3312

Tetradic

#121F33

#33122F

#332612

#123315

Color Blindness Simulation

Original

#121F33

Protanopia

#18182E

Deuteranopia

#17162D

Tritanopia

#132A2A

Achromatopsia

#1E1E1E

CSS Usage

background-color: #121F33;
color: #121F33;
border-color: #121F33;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F4F7FA
100
#E6ECF4
200
#CAD8EC
300
#A5BCDF
400
#7497CE
500
#4372BC
600
#355C97
700
#2B4979
800
#21395E
900
#1C2C45
950
#111C2C

Contrast Checker

Text on white

16.54:1

AA Pass AAA Pass

Text on black

1.27:1

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