#040F09

#040F09

Color Values

HEX

#040F09

RGB

4, 15, 9

HSL

147.3, 57.9%, 3.7%

HSV

147.3, 73.3%, 5.9%

CMYK

73.3%, 0.0%, 40.0%, 94.1%

OKLCH

0.1543 0.0224 161.4

Properties

Cool Dark Nearest: RAL 9005 Jet Black

Color Harmonies

Complementary

#040F09

#0F040A

Analogous

#040F04

#040F0E

#040F09

Triadic

#040F09

#09040F

#0F0904

Split Complementary

#040F09

#0E040F

#0F0404

Tetradic

#040F09

#04040F

#0F040A

#0F0E04

Color Blindness Simulation

Original

#040F09

Protanopia

#09090A

Deuteranopia

#08070B

Tritanopia

#050C0C

Achromatopsia

#0C0C0C

CSS Usage

background-color: #040F09;
color: #040F09;
border-color: #040F09;
Nearest Tailwind: Neutral 950 #0A0A0A

Tailwind Shades

50
#F4FBF7
100
#E4F6EC
200
#C7F0D9
300
#9EE5BF
400
#6AD79C
500
#36C979
600
#2BA161
700
#22814D
800
#1B653C
900
#174A2E
950
#0F2F1D

Contrast Checker

Text on white

19.49:1

AA Pass AAA Pass

Text on black

1.08:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

ก.พ. 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

ก.พ. 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

ก.พ. 19, 2026