#121A4B

#121A4B

Color Values

HEX

#121A4B

RGB

18, 26, 75

HSL

231.6, 61.3%, 18.2%

HSV

231.6, 76.0%, 29.4%

CMYK

76.0%, 65.3%, 0.0%, 70.6%

OKLCH

0.2457 0.0909 271.0

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#121A4B

#4B4312

Analogous

#12364B

#26124B

#121A4B

Triadic

#121A4B

#4B121A

#1A4B12

Split Complementary

#121A4B

#4B2612

#364B12

Tetradic

#121A4B

#4B1236

#4B4312

#124B26

Color Blindness Simulation

Original

#121A4B

Protanopia

#15163F

Deuteranopia

#15143C

Tritanopia

#123634

Achromatopsia

#1C1C1C

CSS Usage

background-color: #121A4B;
color: #121A4B;
border-color: #121A4B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F3F4FB
100
#E4E6F6
200
#C5CCF1
300
#9CA7E7
400
#6777DA
500
#3147CE
600
#2739A5
700
#202E84
800
#192467
900
#161D4B
950
#0E122F

Contrast Checker

Text on white

16.47:1

AA Pass AAA Pass

Text on black

1.28:1

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