#17172F

#17172F

Color Values

HEX

#17172F

RGB

23, 23, 47

HSL

240.0, 34.3%, 13.7%

HSV

240.0, 51.1%, 18.4%

CMYK

51.1%, 51.1%, 0.0%, 81.6%

OKLCH

0.2185 0.0464 281.9

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#17172F

#2F2F17

Analogous

#17232F

#23172F

#17172F

Triadic

#17172F

#2F1717

#172F17

Split Complementary

#17172F

#2F2317

#232F17

Tetradic

#17172F

#2F1723

#2F2F17

#172F23

Color Blindness Simulation

Original

#17172F

Protanopia

#171729

Deuteranopia

#171728

Tritanopia

#172524

Achromatopsia

#191919

CSS Usage

background-color: #17172F;
color: #17172F;
border-color: #17172F;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F5FA
100
#E8E8F2
200
#CFCFE8
300
#ADADD7
400
#8080C1
500
#5454AB
600
#434389
700
#36366E
800
#2A2A56
900
#21213F
950
#151528

Contrast Checker

Text on white

17.5:1

AA Pass AAA Pass

Text on black

1.2:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026