#40577B

#40577B

Color Values

HEX

#40577B

RGB

64, 87, 123

HSL

216.6, 31.6%, 36.7%

HSV

216.6, 48.0%, 48.2%

CMYK

48.0%, 29.3%, 0.0%, 51.8%

OKLCH

0.4541 0.0657 259.1

Properties

Cool Dark Nearest: RAL 5000 Violet Blue

Color Harmonies

Complementary

#40577B

#7B6440

Analogous

#40757B

#47407B

#40577B

Triadic

#40577B

#7B4057

#577B40

Split Complementary

#40577B

#7B4740

#757B40

Tetradic

#40577B

#7B4075

#7B6440

#407B47

Color Blindness Simulation

Original

#40577B

Protanopia

#4A4A72

Deuteranopia

#494770

Tritanopia

#416B6A

Achromatopsia

#555555

CSS Usage

background-color: #40577B;
color: #40577B;
border-color: #40577B;
Nearest Tailwind: Sky 900 #0C4A6E

Tailwind Shades

50
#F5F7F9
100
#E8ECF2
200
#D0D9E7
300
#AEBED5
400
#839ABE
500
#5777A8
600
#465F86
700
#384C6B
800
#2C3B54
900
#232D3E
950
#161D27

Contrast Checker

Text on white

7.32:1

AA Pass AAA Pass

Text on black

2.87:1

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