#040F0F#040F0F

#040F0F is a very dark, near-neutral teal. Relative luminance 0.004; OKLCH L 15.7% C 0.018 H 195.5°. Best body text is #FFFFFF at 19.44:1 contrast (WCAG AA passes).

Color values

HEX	#040F0F
RGB	rgb(4, 15, 15)
HSL	hsl(180, 58%, 4%)
HSV	hsv(180, 73%, 6%)
CMYK	cmyk(73.3%, 0%, 0%, 94.1%)
CIE-LAB	lab(3.63, -3.07, -1.08)
CIE-LCH	lch(3.63, 3.25, 199.42°)
OKLab	oklab(15.69% -0.0173 -0.0048)
OKLCH	oklch(15.69% 0.018 195.5)
XYZ	xyz(0.3071, 0.4019, 0.5132)
Luminance	0.0040 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F0F #0F0404

analogous

#040F09 #040F0F #04090F

triadic

#040F0F #0F040F #0F0F04

tetradic

#040F0F #09040F #0F0404 #090F04

square

#040F0F #09040F #0F0404 #090F04

split-complementary

#040F0F #0F0409 #0F0904

monochromatic

#061818 #061818 #061818 #113F3F #1E7070

Accessibility & contrast

On white

19.44

#040F0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#040F0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F0F

19.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F0F	#FFFFFF	#000000	##FFFFFF
##040F0F	1.00	19.44	1.08	19.44
#FFFFFF	19.44	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E0E0F

Deuteranopia (green-blind)

#0B0C0F

Tritanopia (blue-blind)

#01100F

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #040f0f;
/* rgb */ color: rgb(4, 15, 15);
/* oklch */ color: oklch(15.7% 0.018 195.5);

Tailwind

colors: {
  custom: {
    50: '#484e4e',
    500: '#040f0f',
    950: '#000000',
  },
}

SCSS

$custom: #040f0f;
$custom-light: #484e4e;
$custom-dark: #000000;

JSON

{
  "hex": "#040f0f",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 15
  },
  "hsl": {
    "h": 180,
    "s": 57.895,
    "l": 3.725
  },
  "oklch": {
    "l": 0.1569,
    "c": 0.01795,
    "h": 195.5
  },
  "luminance": 0.00402
}

Semantic roles & 50–950 ramp

primary

#040F0F

secondary

#4E2121

accent

#4747E1

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000101

muted

#777777

Preview Lab

Preview with #040F0F

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

Preview Lab → · Contrast checker → · Palette generator →