#040F19

#040F19

Color Values

HEX

#040F19

RGB

4, 15, 25

HSL

208,6, 72,4%, 5,7%

HSV

208,6, 84,0%, 9,8%

CMYK

84,0%, 40,0%, 0,0%, 90,2%

OKLCH

0,1629 0,0278 244,6

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#040F19

#190E04

Analogous

#041919

#040519

#040F19

Triadic

#040F19

#19040F

#0F1904

Split Complementary

#040F19

#190405

#191904

Tetradic

#040F19

#190419

#190E04

#051904

Color Blindness Simulation

Original

#040F19

Protanopia

#090917

Deuteranopia

#080716

Tritanopia

#051514

Achromatopsia

#0D0D0D

CSS Usage

background-color: #040F19;
color: #040F19;
border-color: #040F19;
Nearest Tailwind: Gray 950 #030712

Tailwind Shades

50
#F3F8FC
100
#E2EEF8
200
#C1DDF5
300
#95C4EE
400
#5CA4E5
500
#2384DC
600
#1C69B0
700
#17548D
800
#12426E
900
#113250
950
#0B2033

Contrast Checker

Text on white

19,31:1

AA Pass AAA Pass

Text on black

1,09:1

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