#131838

#131838

Color Values

HEX

#131838

RGB

19, 24, 56

HSL

231.9, 49.3%, 14.7%

HSV

231.9, 66.1%, 22.0%

CMYK

66.1%, 57.1%, 0.0%, 78.0%

OKLCH

0.2244 0.0619 273.7

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#131838

#383313

Analogous

#132A38

#201338

#131838

Triadic

#131838

#381318

#183813

Split Complementary

#131838

#382013

#2A3813

Tetradic

#131838

#38132A

#383313

#133820

Color Blindness Simulation

Original

#131838

Protanopia

#151530

Deuteranopia

#15142E

Tritanopia

#132A29

Achromatopsia

#191919

CSS Usage

background-color: #131838;
color: #131838;
border-color: #131838;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F4F5FB
100
#E6E8F5
200
#CACEED
300
#A4ACE0
400
#727FCF
500
#4152BE
600
#344198
700
#29347A
800
#20295F
900
#1B2146
950
#11152C

Contrast Checker

Text on white

17.28:1

AA Pass AAA Pass

Text on black

1.22:1

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