#040F17#040F17

#040F17 is a very dark, muted cyan. Relative luminance 0.004; OKLCH L 16.2% C 0.025 H 238.7°. Best body text is #FFFFFF at 19.34:1 contrast (WCAG AA passes).

Color values

HEX	#040F17
RGB	rgb(4, 15, 23)
HSL	hsl(205, 70%, 5%)
HSV	hsv(205, 83%, 9%)
CMYK	cmyk(82.6%, 34.8%, 0%, 91%)
CIE-LAB	lab(3.88, -1.33, -5.81)
CIE-LCH	lch(3.88, 5.96, 257.08°)
OKLab	oklab(16.15% -0.0128 -0.0211)
OKLCH	oklch(16.15% 0.025 238.7)
XYZ	xyz(0.3755, 0.4293, 0.8735)
Luminance	0.0043 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F17 #170C04

analogous

#041715 #040F17 #040517

triadic

#040F17 #17040F #0F1704

tetradic

#040F17 #150417 #170C04 #051704

square

#040F17 #150417 #170C04 #051704

split-complementary

#040F17 #170405 #171504

monochromatic

#05111A #05111A #05111A #0D314B #16537F

Accessibility & contrast

On white

19.34

#040F17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#040F17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F17

19.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F17	#FFFFFF	#000000	##FFFFFF
##040F17	1.00	19.34	1.09	19.34
#FFFFFF	19.34	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B0F17

Deuteranopia (green-blind)

#090D17

Tritanopia (blue-blind)

#001112

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #040f17;
/* rgb */ color: rgb(4, 15, 23);
/* oklch */ color: oklch(16.2% 0.025 238.7);

Tailwind

colors: {
  custom: {
    50: '#484e53',
    500: '#040f17',
    950: '#000000',
  },
}

SCSS

$custom: #040f17;
$custom-light: #484e53;
$custom-dark: #000000;

JSON

{
  "hex": "#040f17",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 23
  },
  "hsl": {
    "h": 205.263,
    "s": 70.37,
    "l": 5.294
  },
  "oklch": {
    "l": 0.16152,
    "c": 0.0247,
    "h": 238.7
  },
  "luminance": 0.00429
}

Semantic roles & 50–950 ramp

primary

#040F17

secondary

#59371E

accent

#863BED

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000102

muted

#777778

Preview Lab

Preview with #040F17

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

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