#172D3B

#172D3B

Color Values

HEX

#172D3B

RGB

23, 45, 59

HSL

203.3, 43.9%, 16.1%

HSV

203.3, 61.0%, 23.1%

CMYK

61.0%, 23.7%, 0.0%, 76.9%

OKLCH

0.2858 0.0381 238.0

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#172D3B

#3B2517

Analogous

#173B37

#171B3B

#172D3B

Triadic

#172D3B

#3B172D

#2D3B17

Split Complementary

#172D3B

#3B171B

#3B3717

Tetradic

#172D3B

#37173B

#3B2517

#1B3B17

Color Blindness Simulation

Original

#172D3B

Protanopia

#212138

Deuteranopia

#1F1E37

Tritanopia

#183534

Achromatopsia

#292929

CSS Usage

background-color: #172D3B;
color: #172D3B;
border-color: #172D3B;
Nearest Tailwind: Gray 800 #1F2937

Tailwind Shades

50
#F4F8FA
100
#E6EFF4
200
#CCDFEB
300
#A7C8DD
400
#77AACA
500
#488CB7
600
#397093
700
#2E5A75
800
#24465C
900
#1D3544
950
#13212B

Contrast Checker

Text on white

14.24:1

AA Pass AAA Pass

Text on black

1.47:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026