#031B33

#031B33

Color Values

HEX

#031B33

RGB

3, 27, 51

HSL

210.0, 88.9%, 10.6%

HSV

210.0, 94.1%, 20.0%

CMYK

94.1%, 47.1%, 0.0%, 80.0%

OKLCH

0.2184 0.0562 250.6

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#031B33

#331B03

Analogous

#033333

#030333

#031B33

Triadic

#031B33

#33031B

#1B3303

Split Complementary

#031B33

#330303

#333303

Tetradic

#031B33

#330333

#331B03

#033303

Color Blindness Simulation

Original

#031B33

Protanopia

#0D0E2D

Deuteranopia

#0C0A2C

Tritanopia

#042928

Achromatopsia

#181818

CSS Usage

background-color: #031B33;
color: #031B33;
border-color: #031B33;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F2F7FD
100
#E0EDFB
200
#BCDBFB
300
#8BC2F8
400
#4DA1F5
500
#0E80F1
600
#0B66C1
700
#09529A
800
#074078
900
#0A3057
950
#061F37

Contrast Checker

Text on white

17.38:1

AA Pass AAA Pass

Text on black

1.21:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026