#172D3F

#172D3F

Color Values

HEX

#172D3F

RGB

23, 45, 63

HSL

207.0, 46.5%, 16.9%

HSV

207.0, 63.5%, 24.7%

CMYK

63.5%, 28.6%, 0.0%, 75.3%

OKLCH

0.288 0.0435 244.8

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#172D3F

#3F2917

Analogous

#173F3D

#17193F

#172D3F

Triadic

#172D3F

#3F172D

#2D3F17

Split Complementary

#172D3F

#3F1719

#3F3D17

Tetradic

#172D3F

#3D173F

#3F2917

#193F17

Color Blindness Simulation

Original

#172D3F

Protanopia

#21213B

Deuteranopia

#1F1E3A

Tritanopia

#183736

Achromatopsia

#2A2A2A

CSS Usage

background-color: #172D3F;
color: #172D3F;
border-color: #172D3F;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F4F8FA
100
#E6EEF4
200
#CBDDEC
300
#A5C5DE
400
#75A5CD
500
#4485BB
600
#376B95
700
#2C5578
800
#22435D
900
#1C3245
950
#12202B

Contrast Checker

Text on white

14.16:1

AA Pass AAA Pass

Text on black

1.48:1

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