#010728

#010728

Color Values

HEX

#010728

RGB

1, 7, 40

HSL

230.8, 95.1%, 8.0%

HSV

230.8, 97.5%, 15.7%

CMYK

97.5%, 82.5%, 0.0%, 84.3%

OKLCH

0.1508 0.0697 264.4

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#010728

#282201

Analogous

#011A28

#0E0128

#010728

Triadic

#010728

#280107

#072801

Split Complementary

#010728

#280E01

#1A2801

Tetradic

#010728

#28011A

#282201

#01280E

Color Blindness Simulation

Original

#010728

Protanopia

#040420

Deuteranopia

#03031E

Tritanopia

#011A18

Achromatopsia

#080808

CSS Usage

background-color: #010728;
color: #010728;
border-color: #010728;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F1F3FE
100
#DFE3FC
200
#B9C4FD
300
#8899FC
400
#4762FA
500
#062BF9
600
#0523C7
700
#041C9F
800
#03167C
900
#07145A
950
#040C39

Contrast Checker

Text on white

19.77:1

AA Pass AAA Pass

Text on black

1.06:1

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