#303D91

#303D91

Color Values

HEX

#303D91

RGB

48, 61, 145

HSL

232.0, 50.3%, 37.8%

HSV

232.0, 66.9%, 56.9%

CMYK

66.9%, 57.9%, 0.0%, 43.1%

OKLCH

0.4007 0.1385 272.0

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#303D91

#918430

Analogous

#306D91

#533091

#303D91

Triadic

#303D91

#91303D

#3D9130

Split Complementary

#303D91

#915330

#6D9130

Tetradic

#303D91

#91306D

#918430

#309153

Color Blindness Simulation

Original

#303D91

Protanopia

#36367D

Deuteranopia

#353478

Tritanopia

#316D69

Achromatopsia

#404040

CSS Usage

background-color: #303D91;
color: #303D91;
border-color: #303D91;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FB
100
#E6E8F5
200
#C9CEED
300
#A3ABE1
400
#717ED0
500
#3F50C0
600
#334099
700
#29347B
800
#202860
900
#1B2046
950
#11142C

Contrast Checker

Text on white

9.54:1

AA Pass AAA Pass

Text on black

2.2:1

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