#1B101F

#1B101F

Color Values

HEX

#1B101F

RGB

27, 16, 31

HSL

284.0, 31.9%, 9.2%

HSV

284.0, 48.4%, 12.2%

CMYK

12.9%, 48.4%, 0.0%, 87.8%

OKLCH

0.1953 0.0336 316.8

Properties

Cool Dark Nearest: RAL 5011 Steel Blue

Color Harmonies

Complementary

#1B101F

#141F10

Analogous

#13101F

#1F101B

#1B101F

Triadic

#1B101F

#1F1B10

#101F1B

Split Complementary

#1B101F

#1B1F10

#101F13

Tetradic

#1B101F

#1F1310

#141F10

#101B1F

Color Blindness Simulation

Original

#1B101F

Protanopia

#16161B

Deuteranopia

#17181A

Tritanopia

#1A1918

Achromatopsia

#131313

CSS Usage

background-color: #1B101F;
color: #1B101F;
border-color: #1B101F;
Nearest Tailwind: Gray 900 #111827

Tailwind Shades

50
#F8F5F9
100
#EFE8F2
200
#E1D0E7
300
#CBAED5
400
#AF83BF
500
#9257A8
600
#754587
700
#5E386C
800
#492B54
900
#37233E
950
#231627

Contrast Checker

Text on white

18.41:1

AA Pass AAA Pass

Text on black

1.14:1

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