#011728

#011728

Color Values

HEX

#011728

RGB

1, 23, 40

HSL

206.2, 95.1%, 8.0%

HSV

206.2, 97.5%, 15.7%

CMYK

97.5%, 42.5%, 0.0%, 84.3%

OKLCH

0.1967 0.0455 243.2

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#011728

#281201

Analogous

#012825

#010328

#011728

Triadic

#011728

#280117

#172801

Split Complementary

#011728

#280103

#282501

Tetradic

#011728

#250128

#281201

#032801

Color Blindness Simulation

Original

#011728

Protanopia

#0B0B24

Deuteranopia

#090823

Tritanopia

#022120

Achromatopsia

#141414

CSS Usage

background-color: #011728;
color: #011728;
border-color: #011728;
Nearest Tailwind: Gray 900 #111827

Tailwind Shades

50
#F1F8FE
100
#DFEFFC
200
#B9E0FD
300
#88C9FC
400
#47ACFA
500
#068FF9
600
#0572C7
700
#045B9F
800
#03477C
900
#07365A
950
#042239

Contrast Checker

Text on white

18.19:1

AA Pass AAA Pass

Text on black

1.15:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026