#1F3147

#1F3147

Color Values

HEX

#1F3147

RGB

31, 49, 71

HSL

213.0, 39.2%, 20.0%

HSV

213.0, 56.3%, 27.8%

CMYK

56.3%, 31.0%, 0.0%, 72.2%

OKLCH

0.3085 0.0464 254.0

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#1F3147

#47351F

Analogous

#1F4547

#211F47

#1F3147

Triadic

#1F3147

#471F31

#31471F

Split Complementary

#1F3147

#47211F

#45471F

Tetradic

#1F3147

#471F45

#47351F

#1F4721

Color Blindness Simulation

Original

#1F3147

Protanopia

#272742

Deuteranopia

#262440

Tritanopia

#203D3D

Achromatopsia

#2F2F2F

CSS Usage

background-color: #1F3147;
color: #1F3147;
border-color: #1F3147;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F5F7FA
100
#E7EDF3
200
#CDDAE9
300
#AABFDA
400
#7C9DC6
500
#4E7BB1
600
#3E628E
700
#324E72
800
#273D59
900
#1F2F42
950
#141E29

Contrast Checker

Text on white

13.22:1

AA Pass AAA Pass

Text on black

1.59:1

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