#040A00#040A00

#040A00 is a very dark, muted yellow-green. Relative luminance 0.002; OKLCH L 13.2% C 0.035 H 129.9°. Best body text is #FFFFFF at 20.03:1 contrast (WCAG AA passes).

Color values

HEX	#040A00
RGB	rgb(4, 10, 0)
HSL	hsl(96, 100%, 2%)
HSV	hsv(96, 100%, 4%)
CMYK	cmyk(60%, 0%, 100%, 96.1%)
CIE-LAB	lab(2.19, -2.96, 3.23)
CIE-LCH	lch(2.19, 4.38, 132.49°)
OKLab	oklab(13.18% -0.0227 0.0272)
OKLCH	oklch(13.18% 0.035 129.9)
XYZ	xyz(0.1586, 0.2429, 0.0385)
Luminance	0.0024 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040A00 #06000A

analogous

#090A00 #040A00 #000A01

triadic

#040A00 #00040A #0A0004

tetradic

#040A00 #00090A #06000A #0A0100

square

#040A00 #00090A #06000A #0A0100

split-complementary

#040A00 #01000A #0A0009

monochromatic

#0C1F00 #0C1F00 #0C1F00 #1C4700 #358400

Accessibility & contrast

On white

20.03

#040A00 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#040A00 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040A00

20.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040A00	#FFFFFF	#000000	##FFFFFF
##040A00	1.00	20.03	1.05	20.03
#FFFFFF	20.03	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	20.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B0800

Deuteranopia (green-blind)

#0A0800

Tritanopia (blue-blind)

#040907

Achromatopsia (no color)

#080808

Design tokens & code

CSS

--color: #040a00;
/* rgb */ color: rgb(4, 10, 0);
/* oklch */ color: oklch(13.2% 0.035 129.9);

Tailwind

colors: {
  custom: {
    50: '#484b47',
    500: '#040a00',
    950: '#000000',
  },
}

SCSS

$custom: #040a00;
$custom-light: #484b47;
$custom-dark: #000000;

JSON

{
  "hex": "#040a00",
  "rgb": {
    "r": 4,
    "g": 10,
    "b": 0
  },
  "hsl": {
    "h": 96,
    "s": 100,
    "l": 1.961
  },
  "oklch": {
    "l": 0.13178,
    "c": 0.03543,
    "h": 129.9
  },
  "luminance": 0.00243
}

Semantic roles & 50–950 ramp

primary

#040A00

secondary

#3A0F57

accent

#29FFA9

background

#F4F4F3

surface

#E6E7E5

border

#C2C3C1

text

#000100

muted

#777777

Preview Lab

Preview with #040A00

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

Preview Lab → · Contrast checker → · Palette generator →