#28397C

#28397C

Color Values

HEX

#28397C

RGB

40, 57, 124

HSL

227.9, 51.2%, 32.2%

HSV

227.9, 67.7%, 48.6%

CMYK

67.7%, 54.0%, 0.0%, 51.4%

OKLCH

0.3704 0.1155 269.3

Properties

Cool Dark Nearest: NCS S 3060-B Dark Blue

Color Harmonies

Complementary

#28397C

#7C6B28

Analogous

#28637C

#41287C

#28397C

Triadic

#28397C

#7C2839

#397C28

Split Complementary

#28397C

#7C4128

#637C28

Tetradic

#28397C

#7C2863

#7C6B28

#287C41

Color Blindness Simulation

Original

#28397C

Protanopia

#2F306C

Deuteranopia

#2E2D68

Tritanopia

#295F5C

Achromatopsia

#3A3A3A

CSS Usage

background-color: #28397C;
color: #28397C;
border-color: #28397C;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F5FB
100
#E5E9F5
200
#C9D0EE
300
#A2AFE1
400
#7084D1
500
#3E59C1
600
#32479A
700
#28397B
800
#1F2C60
900
#1A2347
950
#10162D

Contrast Checker

Text on white

10.68:1

AA Pass AAA Pass

Text on black

1.97:1

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