#01001F

#01001F

Color Values

HEX

#01001F

RGB

1, 0, 31

HSL

241.9, 100.0%, 6.1%

HSV

241.9, 100.0%, 12.2%

CMYK

96.8%, 100.0%, 0.0%, 87.8%

OKLCH

0.1105 0.0733 268.6

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#01001F

#1E1F00

Analogous

#000F1F

#11001F

#01001F

Triadic

#01001F

#1F0100

#001F01

Split Complementary

#01001F

#1F1100

#0F1F00

Tetradic

#01001F

#1F000F

#1E1F00

#001F11

Color Blindness Simulation

Original

#01001F

Protanopia

#010118

Deuteranopia

#010116

Tritanopia

#011210

Achromatopsia

#020202

CSS Usage

background-color: #01001F;
color: #01001F;
border-color: #01001F;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F1F1FE
100
#DFDEFC
200
#BAB8FF
300
#8885FF
400
#4842FF
500
#0800FF
600
#0600CC
700
#0500A3
800
#040080
900
#08055C
950
#05033A

Contrast Checker

Text on white

20.57:1

AA Pass AAA Pass

Text on black

1.02:1

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