#405579

#405579

Color Values

HEX

#405579

RGB

64, 85, 121

HSL

217.9, 30.8%, 36.3%

HSV

217.9, 47.1%, 47.5%

CMYK

47.1%, 29.8%, 0.0%, 52.5%

OKLCH

0.4483 0.065 260.9

Properties

Cool Dark Nearest: RAL 5000 Violet Blue

Color Harmonies

Complementary

#405579

#796440

Analogous

#407279

#484079

#405579

Triadic

#405579

#794055

#557940

Split Complementary

#405579

#794840

#727940

Tetradic

#405579

#794072

#796440

#407948

Color Blindness Simulation

Original

#405579

Protanopia

#494970

Deuteranopia

#48466E

Tritanopia

#416968

Achromatopsia

#535353

CSS Usage

background-color: #405579;
color: #405579;
border-color: #405579;
Nearest Tailwind: Sky 900 #0C4A6E

Tailwind Shades

50
#F5F7F9
100
#E8ECF2
200
#D0D8E6
300
#AFBDD5
400
#8499BE
500
#5875A7
600
#475E85
700
#384B6B
800
#2C3B53
900
#232D3E
950
#161C27

Contrast Checker

Text on white

7.52:1

AA Pass AAA Pass

Text on black

2.79:1

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