#131723

#131723

Color Values

HEX

#131723

RGB

19, 23, 35

HSL

225.0, 29.6%, 10.6%

HSV

225.0, 45.7%, 13.7%

CMYK

45.7%, 34.3%, 0.0%, 86.3%

OKLCH

0.2066 0.0248 269.9

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#131723

#231F13

Analogous

#131F23

#171323

#131723

Triadic

#131723

#231317

#172313

Split Complementary

#131723

#231713

#1F2313

Tetradic

#131723

#23131F

#231F13

#132317

Color Blindness Simulation

Original

#131723

Protanopia

#151520

Deuteranopia

#14141F

Tritanopia

#131E1D

Achromatopsia

#171717

CSS Usage

background-color: #131723;
color: #131723;
border-color: #131723;
Nearest Tailwind: Gray 900 #111827

Tailwind Shades

50
#F5F6F9
100
#E9EBF2
200
#D1D6E6
300
#B0B9D4
400
#8593BD
500
#5A6DA5
600
#485784
700
#39466A
800
#2D3653
900
#242A3D
950
#161B27

Contrast Checker

Text on white

17.88:1

AA Pass AAA Pass

Text on black

1.17:1

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