#1D172C

#1D172C

Color Values

HEX

#1D172C

RGB

29, 23, 44

HSL

257.1, 31.3%, 13.1%

HSV

257.1, 47.7%, 17.3%

CMYK

34.1%, 47.7%, 0.0%, 82.7%

OKLCH

0.2229 0.0407 296.1

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#1D172C

#262C17

Analogous

#171B2C

#27172C

#1D172C

Triadic

#1D172C

#2C1D17

#172C1D

Split Complementary

#1D172C

#2C2717

#1B2C17

Tetradic

#1D172C

#2C171B

#262C17

#172C27

Color Blindness Simulation

Original

#1D172C

Protanopia

#1A1A27

Deuteranopia

#1B1B26

Tritanopia

#1D2322

Achromatopsia

#1A1A1A

CSS Usage

background-color: #1D172C;
color: #1D172C;
border-color: #1D172C;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F6F5F9
100
#EBE8F2
200
#D6D0E6
300
#BAAFD5
400
#9483BE
500
#6E58A7
600
#584686
700
#47386B
800
#372C54
900
#2B233E
950
#1B1627

Contrast Checker

Text on white

17.34:1

AA Pass AAA Pass

Text on black

1.21:1

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