#170728

#170728

Color Values

HEX

#170728

RGB

23, 7, 40

HSL

269.1, 70.2%, 9.2%

HSV

269.1, 82.5%, 15.7%

CMYK

42.5%, 82.5%, 0.0%, 84.3%

OKLCH

0.1772 0.0654 302.7

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#170728

#182807

Analogous

#070728

#270728

#170728

Triadic

#170728

#281707

#072817

Split Complementary

#170728

#282707

#072807

Tetradic

#170728

#280707

#182807

#072827

Color Blindness Simulation

Original

#170728

Protanopia

#101020

Deuteranopia

#11121E

Tritanopia

#161A18

Achromatopsia

#0D0D0D

CSS Usage

background-color: #170728;
color: #170728;
border-color: #170728;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F7F3FC
100
#EDE2F8
200
#DBC2F4
300
#C197ED
400
#9F5EE3
500
#7D26D9
600
#641EAE
700
#50188B
800
#3E136D
900
#30124F
950
#1E0B32

Contrast Checker

Text on white

19.14:1

AA Pass AAA Pass

Text on black

1.1:1

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