#040A03

#040A03

Color Values

HEX

#040A03

RGB

4, 10, 3

HSL

111.4, 53.8%, 2.5%

HSV

111.4, 70.0%, 3.9%

CMYK

60.0%, 0.0%, 70.0%, 96.1%

OKLCH

0.1334 0.0234 139.6

Properties

Cool Dark Nearest: RAL 9005 Jet Black

Color Harmonies

Complementary

#040A03

#09030A

Analogous

#070A03

#030A05

#040A03

Triadic

#040A03

#03040A

#0A0304

Split Complementary

#040A03

#05030A

#0A0307

Tetradic

#040A03

#03070A

#09030A

#0A0503

Color Blindness Simulation

Original

#040A03

Protanopia

#070705

Deuteranopia

#060605

Tritanopia

#040606

Achromatopsia

#080808

CSS Usage

background-color: #040A03;
color: #040A03;
border-color: #040A03;
Nearest Tailwind: Neutral 950 #0A0A0A

Tailwind Shades

50
#F5FBF4
100
#E7F5E5
200
#CEEFC8
300
#AAE3A1
400
#7CD36E
500
#4FC43B
600
#3F9D2F
700
#327E26
800
#27621D
900
#204819
950
#142D10

Contrast Checker

Text on white

20.0:1

AA Pass AAA Pass

Text on black

1.05:1

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