#00101F

#00101F

Color Values

HEX

#00101F

RGB

0, 16, 31

HSL

209.0, 100.0%, 6.1%

HSV

209.0, 100.0%, 12.2%

CMYK

100.0%, 48.4%, 0.0%, 87.8%

OKLCH

0.1667 0.0411 244.0

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#00101F

#1F0F00

Analogous

#001F1F

#00011F

#00101F

Triadic

#00101F

#1F0010

#101F00

Split Complementary

#00101F

#1F0001

#1F1F00

Tetradic

#00101F

#1F001F

#1F0F00

#011F00

Color Blindness Simulation

Original

#00101F

Protanopia

#07071B

Deuteranopia

#06051A

Tritanopia

#011918

Achromatopsia

#0E0E0E

CSS Usage

background-color: #00101F;
color: #00101F;
border-color: #00101F;
Nearest Tailwind: Slate 950 #020617

Tailwind Shades

50
#F1F8FE
100
#DEEEFC
200
#B8DCFF
300
#85C4FF
400
#42A4FF
500
#0084FF
600
#0069CC
700
#0054A3
800
#004280
900
#05325C
950
#03203A

Contrast Checker

Text on white

19.2:1

AA Pass AAA Pass

Text on black

1.09:1

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