#040F19#040F19

#040F19 is a very dark, muted cyan. Relative luminance 0.004; OKLCH L 16.3% C 0.028 H 244.6°. Best body text is #FFFFFF at 19.31:1 contrast (WCAG AA passes).

Color values

HEX	#040F19
RGB	rgb(4, 15, 25)
HSL	hsl(209, 72%, 6%)
HSV	hsv(209, 84%, 10%)
CMYK	cmyk(84%, 40%, 0%, 90.2%)
CIE-LAB	lab(3.95, -0.80, -7.24)
CIE-LCH	lch(3.95, 7.29, 263.67°)
OKLab	oklab(16.29% -0.0119 -0.0251)
OKLCH	oklch(16.29% 0.028 244.6)
XYZ	xyz(0.3963, 0.4376, 0.9831)
Luminance	0.0044 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F19 #190E04

analogous

#041918 #040F19 #040419

triadic

#040F19 #19040F #0F1904

tetradic

#040F19 #180419 #190E04 #041904

square

#040F19 #180419 #190E04 #041904

split-complementary

#040F19 #190404 #191804

monochromatic

#04101A #04101A #04101A #0C2F4E #154E83

Accessibility & contrast

On white

19.31

#040F19 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#040F19 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F19

19.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F19	#FFFFFF	#000000	##FFFFFF
##040F19	1.00	19.31	1.09	19.31
#FFFFFF	19.31	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B0F19

Deuteranopia (green-blind)

#080D19

Tritanopia (blue-blind)

#001112

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #040f19;
/* rgb */ color: rgb(4, 15, 25);
/* oklch */ color: oklch(16.3% 0.028 244.6);

Tailwind

colors: {
  custom: {
    50: '#484e55',
    500: '#040f19',
    950: '#000000',
  },
}

SCSS

$custom: #040f19;
$custom-light: #484e55;
$custom-dark: #000000;

JSON

{
  "hex": "#040f19",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 25
  },
  "hsl": {
    "h": 208.571,
    "s": 72.414,
    "l": 5.686
  },
  "oklch": {
    "l": 0.16288,
    "c": 0.02782,
    "h": 244.6
  },
  "luminance": 0.00438
}

Semantic roles & 50–950 ramp

primary

#040F19

secondary

#5B3B1E

accent

#9039EF

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000103

muted

#777778

Preview Lab

Preview with #040F19

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

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