#04090B#04090B

#04090B is a very dark, near-neutral cyan. Relative luminance 0.002; OKLCH L 13.4% C 0.011 H 219.1°. Best body text is #FFFFFF at 20.02:1 contrast (WCAG AA passes).

Color values

HEX	#04090B
RGB	rgb(4, 9, 11)
HSL	hsl(197, 47%, 3%)
HSV	hsv(197, 64%, 4%)
CMYK	cmyk(63.6%, 18.2%, 0%, 95.7%)
CIE-LAB	lab(2.22, -1.03, -1.23)
CIE-LCH	lch(2.22, 1.60, 230.10°)
OKLab	oklab(13.39% -0.0089 -0.0072)
OKLCH	oklch(13.39% 0.011 219.1)
XYZ	xyz(0.2081, 0.2453, 0.3529)
Luminance	0.0024 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04090B #0B0604

analogous

#040B09 #04090B #04050B

triadic

#04090B #0B0409 #090B04

tetradic

#04090B #09040B #0B0604 #050B04

square

#04090B #09040B #0B0604 #050B04

split-complementary

#04090B #0B0405 #0B0904

monochromatic

#081216 #081216 #081216 #142E38 #255265

Accessibility & contrast

On white

20.02

#04090B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#04090B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04090B

20.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04090B	#FFFFFF	#000000	##FFFFFF
##04090B	1.00	20.02	1.05	20.02
#FFFFFF	20.02	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	20.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08090B

Deuteranopia (green-blind)

#07080B

Tritanopia (blue-blind)

#020A0A

Achromatopsia (no color)

#080808

Design tokens & code

CSS

--color: #04090b;
/* rgb */ color: rgb(4, 9, 11);
/* oklch */ color: oklch(13.4% 0.011 219.1);

Tailwind

colors: {
  custom: {
    50: '#484b4c',
    500: '#04090b',
    950: '#000000',
  },
}

SCSS

$custom: #04090b;
$custom-light: #484b4c;
$custom-dark: #000000;

JSON

{
  "hex": "#04090b",
  "rgb": {
    "r": 4,
    "g": 9,
    "b": 11
  },
  "hsl": {
    "h": 197.143,
    "s": 46.667,
    "l": 2.941
  },
  "oklch": {
    "l": 0.13389,
    "c": 0.01142,
    "h": 219.1
  },
  "luminance": 0.00245
}

Semantic roles & 50–950 ramp

primary

#04090B

secondary

#472E24

accent

#7751D6

background

#F4F4F4

surface

#E6E7E7

border

#C2C3C3

text

#000101

muted

#777777

Preview Lab

Preview with #04090B

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

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