#040B01#040B01

#040B01 is a very dark, muted green. Relative luminance 0.003; OKLCH L 13.6% C 0.033 H 133.7°. Best body text is #FFFFFF at 19.94:1 contrast (WCAG AA passes).

Color values

HEX	#040B01
RGB	rgb(4, 11, 1)
HSL	hsl(102, 83%, 2%)
HSV	hsv(102, 91%, 4%)
CMYK	cmyk(63.6%, 0%, 90.9%, 95.7%)
CIE-LAB	lab(2.41, -3.23, 3.15)
CIE-LCH	lch(2.41, 4.51, 135.76°)
OKLab	oklab(13.61% -0.0226 0.0237)
OKLCH	oklch(13.61% 0.033 133.7)
XYZ	xyz(0.1752, 0.2673, 0.0711)
Luminance	0.0027 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040B01 #08010B

analogous

#090B01 #040B01 #010B03

triadic

#040B01 #01040B #0B0104

tetradic

#040B01 #01090B #08010B #0B0301

square

#040B01 #01090B #08010B #0B0301

split-complementary

#040B01 #03010B #0B0109

monochromatic

#0A1C03 #0A1C03 #0A1C03 #184306 #2D7B0B

Accessibility & contrast

On white

19.94

#040B01 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#040B01 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040B01

19.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040B01	#FFFFFF	#000000	##FFFFFF
##040B01	1.00	19.94	1.05	19.94
#FFFFFF	19.94	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	19.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0901

Deuteranopia (green-blind)

#0B0901

Tritanopia (blue-blind)

#040A08

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #040b01;
/* rgb */ color: rgb(4, 11, 1);
/* oklch */ color: oklch(13.6% 0.033 133.7);

Tailwind

colors: {
  custom: {
    50: '#484c47',
    500: '#040b01',
    950: '#000000',
  },
}

SCSS

$custom: #040b01;
$custom-light: #484c47;
$custom-dark: #000000;

JSON

{
  "hex": "#040b01",
  "rgb": {
    "r": 4,
    "g": 11,
    "b": 1
  },
  "hsl": {
    "h": 102,
    "s": 83.333,
    "l": 2.353
  },
  "oklch": {
    "l": 0.13606,
    "c": 0.03278,
    "h": 133.7
  },
  "luminance": 0.00267
}

Semantic roles & 50–950 ramp

primary

#040B01

secondary

#401652

accent

#2EFABD

background

#F4F4F3

surface

#E6E7E5

border

#C2C3C1

text

#000100

muted

#777777

Preview Lab

Preview with #040B01

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

Preview Lab → · Contrast checker → · Palette generator →