#0A0404#0A0404

#0A0404 is a very dark, near-neutral red. Relative luminance 0.002; OKLCH L 11.9% C 0.015 H 19.5°. Best body text is #FFFFFF at 20.35:1 contrast (WCAG AA passes).

Color values

HEX	#0A0404
RGB	rgb(10, 4, 4)
HSL	hsl(0, 43%, 3%)
HSV	hsv(0, 60%, 4%)
CMYK	cmyk(0%, 60%, 60%, 96.1%)
CIE-LAB	lab(1.45, 1.57, 0.55)
CIE-LCH	lch(1.45, 1.66, 19.38°)
OKLab	oklab(11.87% 0.0138 0.0049)
OKLCH	oklch(11.87% 0.015 19.5)
XYZ	xyz(0.1905, 0.1601, 0.1357)
Luminance	0.0016 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0404 #040A0A

analogous

#0A0407 #0A0404 #0A0704

triadic

#0A0404 #040A04 #04040A

tetradic

#0A0404 #070A04 #040A0A #07040A

square

#0A0404 #070A04 #040A0A #07040A

split-complementary

#0A0404 #040A07 #04070A

monochromatic

#160909 #160909 #160909 #361515 #612727

Accessibility & contrast

On white

20.35

#0A0404 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#0A0404 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0404

20.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0404	#FFFFFF	#000000	##FFFFFF
##0A0404	1.00	20.35	1.03	20.35
#FFFFFF	20.35	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#050504

Deuteranopia (green-blind)

#060604

Tritanopia (blue-blind)

#0B0404

Achromatopsia (no color)

#050505

Design tokens & code

CSS

--color: #0a0404;
/* rgb */ color: rgb(10, 4, 4);
/* oklch */ color: oklch(11.9% 0.015 19.5);

Tailwind

colors: {
  custom: {
    50: '#4b4848',
    500: '#0a0404',
    950: '#000000',
  },
}

SCSS

$custom: #0a0404;
$custom-light: #4b4848;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0404",
  "rgb": {
    "r": 10,
    "g": 4,
    "b": 4
  },
  "hsl": {
    "h": 0,
    "s": 42.857,
    "l": 2.745
  },
  "oklch": {
    "l": 0.11873,
    "c": 0.01464,
    "h": 19.5
  },
  "luminance": 0.0016
}

Semantic roles & 50–950 ramp

primary

#0A0404

secondary

#254545

accent

#D3D355

background

#F4F4F4

surface

#E7E6E6

border

#C3C2C2

text

#010000

muted

#777777

Preview Lab

Preview with #0A0404

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

Preview Lab → · Contrast checker → · Palette generator →