#040F1C#040F1C

#040F1C is a very dark, muted cyan. Relative luminance 0.005; OKLCH L 16.5% C 0.033 H 251.1°. Best body text is #FFFFFF at 19.26:1 contrast (WCAG AA passes).

Color values

HEX	#040F1C
RGB	rgb(4, 15, 28)
HSL	hsl(213, 75%, 6%)
HSV	hsv(213, 86%, 11%)
CMYK	cmyk(85.7%, 46.4%, 0%, 89%)
CIE-LAB	lab(4.08, 0.06, -9.43)
CIE-LCH	lch(4.08, 9.43, 270.36°)
OKLab	oklab(16.51% -0.0107 -0.0311)
OKLCH	oklch(16.51% 0.033 251.1)
XYZ	xyz(0.4304, 0.4513, 1.1628)
Luminance	0.0045 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F1C #1C1104

analogous

#041B1C #040F1C #05041C

triadic

#040F1C #1C040F #0F1C04

tetradic

#040F1C #1C041B #1C1104 #041C05

square

#040F1C #1C041B #1C1104 #041C05

split-complementary

#040F1C #1C0504 #1B1C04

monochromatic

#040E1B #040E1B #040F1C #0C2C52 #134887

Accessibility & contrast

On white

19.26

#040F1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#040F1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F1C

19.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F1C	#FFFFFF	#000000	##FFFFFF
##040F1C	1.00	19.26	1.09	19.26
#FFFFFF	19.26	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09101D

Deuteranopia (green-blind)

#060D1C

Tritanopia (blue-blind)

#001214

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #040f1c;
/* rgb */ color: rgb(4, 15, 28);
/* oklch */ color: oklch(16.5% 0.033 251.1);

Tailwind

colors: {
  custom: {
    50: '#484e58',
    500: '#040f1c',
    950: '#000000',
  },
}

SCSS

$custom: #040f1c;
$custom-light: #484e58;
$custom-dark: #000000;

JSON

{
  "hex": "#040f1c",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 28
  },
  "hsl": {
    "h": 212.5,
    "s": 75,
    "l": 6.275
  },
  "oklch": {
    "l": 0.16506,
    "c": 0.03291,
    "h": 251.1
  },
  "luminance": 0.00451
}

Semantic roles & 50–950 ramp

primary

#040F1C

secondary

#5E411D

accent

#9C36F2

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000103

muted

#777778

Preview Lab

Preview with #040F1C

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

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