#283C7C

#283C7C

Color Values

HEX

#283C7C

RGB

40, 60, 124

HSL

225.7, 51.2%, 32.2%

HSV

225.7, 67.7%, 48.6%

CMYK

67.7%, 51.6%, 0.0%, 51.4%

OKLCH

0.3771 0.1114 267.7

Properties

Cool Dark Nearest: NCS S 3060-B Dark Blue

Color Harmonies

Complementary

#283C7C

#7C6828

Analogous

#28667C

#3E287C

#283C7C

Triadic

#283C7C

#7C283C

#3C7C28

Split Complementary

#283C7C

#7C3E28

#667C28

Tetradic

#283C7C

#7C2866

#7C6828

#287C3E

Color Blindness Simulation

Original

#283C7C

Protanopia

#31316D

Deuteranopia

#302E69

Tritanopia

#29605E

Achromatopsia

#3C3C3C

CSS Usage

background-color: #283C7C;
color: #283C7C;
border-color: #283C7C;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F4F6FB
100
#E5E9F5
200
#C9D2EE
300
#A2B1E1
400
#7087D1
500
#3E5DC1
600
#324B9A
700
#283C7B
800
#1F2F60
900
#1A2547
950
#10172D

Contrast Checker

Text on white

10.36:1

AA Pass AAA Pass

Text on black

2.03:1

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