#283D5D

#283D5D

Color Values

HEX

#283D5D

RGB

40, 61, 93

HSL

216.2, 39.8%, 26.1%

HSV

216.2, 57.0%, 36.5%

CMYK

57.0%, 34.4%, 0.0%, 63.5%

OKLCH

0.3583 0.062 258.6

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#283D5D

#5D4828

Analogous

#28585D

#2E285D

#283D5D

Triadic

#283D5D

#5D283D

#3D5D28

Split Complementary

#283D5D

#5D2E28

#585D28

Tetradic

#283D5D

#5D2858

#5D4828

#285D2E

Color Blindness Simulation

Original

#283D5D

Protanopia

#313155

Deuteranopia

#302E53

Tritanopia

#294F4E

Achromatopsia

#3B3B3B

CSS Usage

background-color: #283D5D;
color: #283D5D;
border-color: #283D5D;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F5F7FA
100
#E7ECF3
200
#CDD8EA
300
#A9BDDA
400
#7B99C6
500
#4D75B2
600
#3D5E8F
700
#314B72
800
#263B59
900
#1F2D42
950
#141C2A

Contrast Checker

Text on white

10.96:1

AA Pass AAA Pass

Text on black

1.92:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026