#303A87

#303A87

Color Values

HEX

#303A87

RGB

48, 58, 135

HSL

233.1, 47.5%, 35.9%

HSV

233.1, 64.4%, 52.9%

CMYK

64.4%, 57.0%, 0.0%, 47.1%

OKLCH

0.3864 0.128 273.3

Properties

Cool Dark Nearest: royalblue 4

Color Harmonies

Complementary

#303A87

#877D30

Analogous

#306687

#523087

#303A87

Triadic

#303A87

#87303A

#3A8730

Split Complementary

#303A87

#875230

#668730

Tetradic

#303A87

#873066

#877D30

#308752

Color Blindness Simulation

Original

#303A87

Protanopia

#343474

Deuteranopia

#343370

Tritanopia

#306662

Achromatopsia

#3D3D3D

CSS Usage

background-color: #303A87;
color: #303A87;
border-color: #303A87;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FA
100
#E6E8F4
200
#CACEEC
300
#A5ABDF
400
#747ECD
500
#4351BC
600
#364196
700
#2B3478
800
#21285E
900
#1C2145
950
#12152C

Contrast Checker

Text on white

10.09:1

AA Pass AAA Pass

Text on black

2.08:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026