#040F09#040F09

#040F09 is a very dark, muted green. Relative luminance 0.004; OKLCH L 15.4% C 0.022 H 161.4°. Best body text is #FFFFFF at 19.49:1 contrast (WCAG AA passes).

Color values

HEX	#040F09
RGB	rgb(4, 15, 9)
HSL	hsl(147, 58%, 4%)
HSV	hsv(147, 73%, 6%)
CMYK	cmyk(73.3%, 0%, 40%, 94.1%)
CIE-LAB	lab(3.50, -4.01, 1.47)
CIE-LCH	lch(3.50, 4.27, 159.87°)
OKLab	oklab(15.43% -0.0213 0.0072)
OKLCH	oklch(15.43% 0.022 161.4)
XYZ	xyz(0.2702, 0.3872, 0.3189)
Luminance	0.0039 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F09 #0F040A

analogous

#040F04 #040F09 #040F0E

triadic

#040F09 #09040F #0F0904

tetradic

#040F09 #04040F #0F040A #0F0E04

square

#040F09 #04040F #0F040A #0F0E04

split-complementary

#040F09 #0E040F #0F0404

monochromatic

#06180E #06180E #06180E #113F26 #1E7043

Accessibility & contrast

On white

19.49

#040F09 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#040F09 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F09

19.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F09	#FFFFFF	#000000	##FFFFFF
##040F09	1.00	19.49	1.08	19.49
#FFFFFF	19.49	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F0D09

Deuteranopia (green-blind)

#0D0C09

Tritanopia (blue-blind)

#020F0D

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #040f09;
/* rgb */ color: rgb(4, 15, 9);
/* oklch */ color: oklch(15.4% 0.022 161.4);

Tailwind

colors: {
  custom: {
    50: '#484e4b',
    500: '#040f09',
    950: '#000000',
  },
}

SCSS

$custom: #040f09;
$custom-light: #484e4b;
$custom-dark: #000000;

JSON

{
  "hex": "#040f09",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 9
  },
  "hsl": {
    "h": 147.273,
    "s": 57.895,
    "l": 3.725
  },
  "oklch": {
    "l": 0.15429,
    "c": 0.02243,
    "h": 161.4
  },
  "luminance": 0.00387
}

Semantic roles & 50–950 ramp

primary

#040F09

secondary

#4E2139

accent

#479BE1

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000101

muted

#777777

Preview Lab

Preview with #040F09

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →