#304B71

#304B71

Color Values

HEX

#304B71

RGB

48, 75, 113

HSL

215.1, 40.4%, 31.6%

HSV

215.1, 57.5%, 44.3%

CMYK

57.5%, 33.6%, 0.0%, 55.7%

OKLCH

0.4096 0.0722 257.1

Properties

Cool Dark Nearest: RAL 5000 Violet Blue

Color Harmonies

Complementary

#304B71

#715630

Analogous

#306C71

#363071

#304B71

Triadic

#304B71

#71304B

#4B7130

Split Complementary

#304B71

#713630

#6C7130

Tetradic

#304B71

#71306C

#715630

#307136

Color Blindness Simulation

Original

#304B71

Protanopia

#3C3C68

Deuteranopia

#3A3866

Tritanopia

#31615F

Achromatopsia

#484848

CSS Usage

background-color: #304B71;
color: #304B71;
border-color: #304B71;
Nearest Tailwind: Sky 900 #0C4A6E

Tailwind Shades

50
#F5F7FA
100
#E7ECF3
200
#CDD9EA
300
#A9BEDB
400
#7B9AC7
500
#4C77B3
600
#3D5F8F
700
#314C73
800
#263B5A
900
#1F2D42
950
#131D2A

Contrast Checker

Text on white

8.86:1

AA Pass AAA Pass

Text on black

2.37:1

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