#040B13#040B13

#040B13 is a very dark, muted cyan. Relative luminance 0.003; OKLCH L 14.6% C 0.022 H 247.8°. Best body text is #FFFFFF at 19.77:1 contrast (WCAG AA passes).

Color values

HEX	#040B13
RGB	rgb(4, 11, 19)
HSL	hsl(212, 65%, 5%)
HSV	hsv(212, 79%, 7%)
CMYK	cmyk(78.9%, 42.1%, 0%, 92.5%)
CIE-LAB	lab(2.82, -0.39, -4.59)
CIE-LCH	lch(2.82, 4.61, 265.14°)
OKLab	oklab(14.57% -0.0083 -0.0203)
OKLCH	oklch(14.57% 0.022 247.8)
XYZ	xyz(0.2872, 0.3122, 0.6611)
Luminance	0.0031 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040B13 #130C04

analogous

#041313 #040B13 #050413

triadic

#040B13 #13040B #0B1304

tetradic

#040B13 #130413 #130C04 #041305

square

#040B13 #130413 #130C04 #041305

split-complementary

#040B13 #130504 #131304

monochromatic

#050F19 #050F19 #050F19 #0F2846 #194678

Accessibility & contrast

On white

19.77

#040B13 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#040B13 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040B13

19.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040B13	#FFFFFF	#000000	##FFFFFF
##040B13	1.00	19.77	1.06	19.77
#FFFFFF	19.77	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#080B13

Deuteranopia (green-blind)

#060A13

Tritanopia (blue-blind)

#000D0E

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #040b13;
/* rgb */ color: rgb(4, 11, 19);
/* oklch */ color: oklch(14.6% 0.022 247.8);

Tailwind

colors: {
  custom: {
    50: '#484c50',
    500: '#040b13',
    950: '#000000',
  },
}

SCSS

$custom: #040b13;
$custom-light: #484c50;
$custom-dark: #000000;

JSON

{
  "hex": "#040b13",
  "rgb": {
    "r": 4,
    "g": 11,
    "b": 19
  },
  "hsl": {
    "h": 212,
    "s": 65.217,
    "l": 4.51
  },
  "oklch": {
    "l": 0.14572,
    "c": 0.02196,
    "h": 247.8
  },
  "luminance": 0.00312
}

Semantic roles & 50–950 ramp

primary

#040B13

secondary

#543B1F

accent

#9A40E8

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000102

muted

#777778

Preview Lab

Preview with #040B13

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

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