#284F81

#284F81

Color Values

HEX

#284F81

RGB

40, 79, 129

HSL

213.7, 52.7%, 33.1%

HSV

213.7, 69.0%, 50.6%

CMYK

69.0%, 38.8%, 0.0%, 49.4%

OKLCH

0.4249 0.0947 255.6

Properties

Cool Dark Nearest: Midnight Blue

Color Harmonies

Complementary

#284F81

#815A28

Analogous

#287B81

#2D2881

#284F81

Triadic

#284F81

#81284F

#4F8128

Split Complementary

#284F81

#812D28

#7B8128

Tetradic

#284F81

#81287B

#815A28

#28812D

Color Blindness Simulation

Original

#284F81

Protanopia

#393975

Deuteranopia

#373472

Tritanopia

#2A6B69

Achromatopsia

#4A4A4A

CSS Usage

background-color: #284F81;
color: #284F81;
border-color: #284F81;
Nearest Tailwind: Sky 800 #075985

Tailwind Shades

50
#F4F7FB
100
#E5ECF5
200
#C8D9EE
300
#A2BEE2
400
#6F9BD2
500
#3C77C3
600
#305F9C
700
#274C7D
800
#1E3C61
900
#192E47
950
#101D2D

Contrast Checker

Text on white

8.31:1

AA Pass AAA Pass

Text on black

2.53:1

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