#040E17#040E17

#040E17 is a very dark, muted cyan. Relative luminance 0.004; OKLCH L 15.8% C 0.026 H 243.8°. Best body text is #FFFFFF at 19.44:1 contrast (WCAG AA passes).

Color values

HEX	#040E17
RGB	rgb(4, 14, 23)
HSL	hsl(208, 70%, 5%)
HSV	hsv(208, 83%, 9%)
CMYK	cmyk(82.6%, 39.1%, 0%, 91%)
CIE-LAB	lab(3.63, -0.82, -6.17)
CIE-LCH	lch(3.63, 6.23, 262.40°)
OKLab	oklab(15.83% -0.0113 -0.023)
OKLCH	oklch(15.83% 0.026 243.8)
XYZ	xyz(0.3617, 0.4017, 0.8689)
Luminance	0.0040 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E17 #170D04

analogous

#041716 #040E17 #040417

triadic

#040E17 #17040E #0E1704

tetradic

#040E17 #160417 #170D04 #041704

square

#040E17 #160417 #170D04 #041704

split-complementary

#040E17 #170404 #171604

monochromatic

#05101A #05101A #05101A #0D2E4B #164D7F

Accessibility & contrast

On white

19.44

#040E17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#040E17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E17

19.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E17	#FFFFFF	#000000	##FFFFFF
##040E17	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)

#0A0E17

Deuteranopia (green-blind)

#070C17

Tritanopia (blue-blind)

#001011

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #040e17;
/* rgb */ color: rgb(4, 14, 23);
/* oklch */ color: oklch(15.8% 0.026 243.8);

Tailwind

colors: {
  custom: {
    50: '#484d53',
    500: '#040e17',
    950: '#000000',
  },
}

SCSS

$custom: #040e17;
$custom-light: #484d53;
$custom-dark: #000000;

JSON

{
  "hex": "#040e17",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 23
  },
  "hsl": {
    "h": 208.421,
    "s": 70.37,
    "l": 5.294
  },
  "oklch": {
    "l": 0.15826,
    "c": 0.02559,
    "h": 243.8
  },
  "luminance": 0.00402
}

Semantic roles & 50–950 ramp

primary

#040E17

secondary

#593A1E

accent

#8F3BED

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000102

muted

#777778

Preview Lab

Preview with #040E17

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

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