#403778

#403778

Color Values

HEX

#403778

RGB

64, 55, 120

HSL

248.3, 37.1%, 34.3%

HSV

248.3, 54.2%, 47.1%

CMYK

46.7%, 54.2%, 0.0%, 52.9%

OKLCH

0.3816 0.1069 286.5

Properties

Cool Dark Nearest: darkslateblue

Color Harmonies

Complementary

#403778

#6F7837

Analogous

#374E78

#603778

#403778

Triadic

#403778

#784037

#377840

Split Complementary

#403778

#786037

#4E7837

Tetradic

#403778

#78374E

#6F7837

#377860

Color Blindness Simulation

Original

#403778

Protanopia

#3C3C68

Deuteranopia

#3D3D64

Tritanopia

#405C59

Achromatopsia

#3E3E3E

CSS Usage

background-color: #403778;
color: #403778;
border-color: #403778;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F6F5FA
100
#E9E8F3
200
#D2CEE9
300
#B1ABD9
400
#877EC4
500
#5D50AF
600
#4B408C
700
#3C3370
800
#2F2857
900
#252041
950
#171429

Contrast Checker

Text on white

10.32:1

AA Pass AAA Pass

Text on black

2.04:1

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