#040A09#040A09

#040A09 is a very dark, near-neutral teal. Relative luminance 0.003; OKLCH L 13.6% C 0.012 H 185.2°. Best body text is #FFFFFF at 19.95:1 contrast (WCAG AA passes).

Color values

HEX	#040A09
RGB	rgb(4, 10, 9)
HSL	hsl(170, 43%, 3%)
HSV	hsv(170, 60%, 4%)
CMYK	cmyk(60%, 0%, 10%, 96.1%)
CIE-LAB	lab(2.37, -1.71, -0.17)
CIE-LCH	lch(2.37, 1.72, 185.82°)
OKLab	oklab(13.65% -0.0121 -0.0011)
OKLCH	oklch(13.65% 0.012 185.2)
XYZ	xyz(0.2079, 0.2626, 0.2981)
Luminance	0.0026 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040A09 #0A0405

analogous

#040A06 #040A09 #04080A

triadic

#040A09 #09040A #0A0904

tetradic

#040A09 #06040A #0A0405 #080A04

square

#040A09 #06040A #0A0405 #080A04

split-complementary

#040A09 #0A0408 #0A0604

monochromatic

#091614 #091614 #091614 #153630 #276158

Accessibility & contrast

On white

19.95

#040A09 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#040A09 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040A09

19.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040A09	#FFFFFF	#000000	##FFFFFF
##040A09	1.00	19.95	1.05	19.95
#FFFFFF	19.95	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	19.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#090909

Deuteranopia (green-blind)

#080809

Tritanopia (blue-blind)

#030A0A

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #040a09;
/* rgb */ color: rgb(4, 10, 9);
/* oklch */ color: oklch(13.6% 0.012 185.2);

Tailwind

colors: {
  custom: {
    50: '#484b4b',
    500: '#040a09',
    950: '#000000',
  },
}

SCSS

$custom: #040a09;
$custom-light: #484b4b;
$custom-dark: #000000;

JSON

{
  "hex": "#040a09",
  "rgb": {
    "r": 4,
    "g": 10,
    "b": 9
  },
  "hsl": {
    "h": 170,
    "s": 42.857,
    "l": 2.745
  },
  "oklch": {
    "l": 0.13645,
    "c": 0.01218,
    "h": 185.2
  },
  "luminance": 0.00263
}

Semantic roles & 50–950 ramp

primary

#040A09

secondary

#45252A

accent

#556AD3

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000101

muted

#777777

Preview Lab

Preview with #040A09

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

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