#303378

#303378

Color Values

HEX

#303378

RGB

48, 51, 120

HSL

237.5, 42.9%, 32.9%

HSV

237.5, 60.0%, 47.1%

CMYK

60.0%, 57.5%, 0.0%, 52.9%

OKLCH

0.36 0.1156 277.0

Properties

Cool Dark Nearest: NCS S 3060-B Dark Blue

Color Harmonies

Complementary

#303378

#787530

Analogous

#305778

#513078

#303378

Triadic

#303378

#783033

#337830

Split Complementary

#303378

#785130

#577830

Tetradic

#303378

#783057

#787530

#307851

Color Blindness Simulation

Original

#303378

Protanopia

#313167

Deuteranopia

#313163

Tritanopia

#305A57

Achromatopsia

#373737

CSS Usage

background-color: #303378;
color: #303378;
border-color: #303378;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E7E7F4
200
#CCCDEB
300
#A8AADC
400
#787CC9
500
#494DB6
600
#3A3E92
700
#2F3275
800
#24275B
900
#1E1F43
950
#13142A

Contrast Checker

Text on white

11.23:1

AA Pass AAA Pass

Text on black

1.87:1

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