#040B03#040B03

#040B03 is a very dark, muted green. Relative luminance 0.003; OKLCH L 13.7% C 0.026 H 140.1°. Best body text is #FFFFFF at 19.92:1 contrast (WCAG AA passes).

Color values

HEX	#040B03
RGB	rgb(4, 11, 3)
HSL	hsl(113, 57%, 3%)
HSV	hsv(113, 73%, 4%)
CMYK	cmyk(63.6%, 0%, 72.7%, 95.7%)
CIE-LAB	lab(2.45, -2.95, 2.39)
CIE-LCH	lch(2.45, 3.80, 141.01°)
OKLab	oklab(13.71% -0.0197 0.0165)
OKLCH	oklch(13.71% 0.026 140.1)
XYZ	xyz(0.1862, 0.2717, 0.1288)
Luminance	0.0027 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040B03 #0A030B

analogous

#080B03 #040B03 #030B06

triadic

#040B03 #03040B #0B0304

tetradic

#040B03 #03080B #0A030B #0B0603

square

#040B03 #03080B #0A030B #0B0603

split-complementary

#040B03 #06030B #0B0308

monochromatic

#091807 #091807 #091807 #153B10 #276B1D

Accessibility & contrast

On white

19.92

#040B03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#040B03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040B03

19.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040B03	#FFFFFF	#000000	##FFFFFF
##040B03	1.00	19.92	1.05	19.92
#FFFFFF	19.92	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	19.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0903

Deuteranopia (green-blind)

#0A0903

Tritanopia (blue-blind)

#040A09

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #040b03;
/* rgb */ color: rgb(4, 11, 3);
/* oklch */ color: oklch(13.7% 0.026 140.1);

Tailwind

colors: {
  custom: {
    50: '#484c48',
    500: '#040b03',
    950: '#000000',
  },
}

SCSS

$custom: #040b03;
$custom-light: #484c48;
$custom-dark: #000000;

JSON

{
  "hex": "#040b03",
  "rgb": {
    "r": 4,
    "g": 11,
    "b": 3
  },
  "hsl": {
    "h": 112.5,
    "s": 57.143,
    "l": 2.745
  },
  "oklch": {
    "l": 0.13706,
    "c": 0.02569,
    "h": 140.1
  },
  "luminance": 0.00272
}

Semantic roles & 50–950 ramp

primary

#040B03

secondary

#45204A

accent

#47E0CD

background

#F4F4F4

surface

#E6E7E6

border

#C2C3C2

text

#000100

muted

#777777

Preview Lab

Preview with #040B03

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

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