#042037

#042037

Color Values

HEX

#042037

RGB

4, 32, 55

HSL

207.1, 86.4%, 11.6%

HSV

207.1, 92.7%, 21.6%

CMYK

92.7%, 41.8%, 0.0%, 78.4%

OKLCH

0.2366 0.0555 247.1

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#042037

#371B04

Analogous

#043735

#040637

#042037

Triadic

#042037

#370420

#203704

Split Complementary

#042037

#370406

#373504

Tetradic

#042037

#350437

#371B04

#063704

Color Blindness Simulation

Original

#042037

Protanopia

#101031

Deuteranopia

#0E0C30

Tritanopia

#052D2C

Achromatopsia

#1C1C1C

CSS Usage

background-color: #042037;
color: #042037;
border-color: #042037;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F2F8FD
100
#E0EEFA
200
#BCDEFA
300
#8DC7F7
400
#4FA9F2
500
#118AEE
600
#0E6FBE
700
#0B5898
800
#094577
900
#0B3456
950
#072136

Contrast Checker

Text on white

16.58:1

AA Pass AAA Pass

Text on black

1.27:1

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