#333579

#333579

Color Values

HEX

#333579

RGB

51, 53, 121

HSL

238.3, 40.7%, 33.7%

HSV

238.3, 57.9%, 47.5%

CMYK

57.9%, 56.2%, 0.0%, 52.5%

OKLCH

0.3672 0.1135 278.0

Properties

Cool Dark Nearest: NCS S 3060-B Dark Blue

Color Harmonies

Complementary

#333579

#797733

Analogous

#335879

#543379

#333579

Triadic

#333579

#793335

#357933

Split Complementary

#333579

#795433

#587933

Tetradic

#333579

#793358

#797733

#337954

Color Blindness Simulation

Original

#333579

Protanopia

#343469

Deuteranopia

#343465

Tritanopia

#335C59

Achromatopsia

#393939

CSS Usage

background-color: #333579;
color: #333579;
border-color: #333579;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E7E7F3
200
#CDCEEA
300
#A9AADB
400
#7A7CC7
500
#4C4FB3
600
#3C3F90
700
#303273
800
#26275A
900
#1F2042
950
#13142A

Contrast Checker

Text on white

10.9:1

AA Pass AAA Pass

Text on black

1.93:1

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