#400404#400404

#400404 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.9% C 0.090 H 27.5°. Best body text is #FFFFFF at 16.97:1 contrast (WCAG AA passes).

Color values

HEX	#400404
RGB	rgb(64, 4, 4)
HSL	hsl(0, 88%, 13%)
HSV	hsv(0, 94%, 25%)
CMYK	cmyk(0%, 93.8%, 93.8%, 74.9%)
CIE-LAB	lab(10.45, 28.04, 14.75)
CIE-LCH	lch(10.45, 31.68, 27.75°)
OKLab	oklab(23.89% 0.0799 0.0417)
OKLCH	oklch(23.89% 0.09 27.5)
XYZ	xyz(2.1800, 1.1860, 0.2290)
Luminance	0.0119 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400404 #044040

analogous

#400422 #400404 #402204

triadic

#400404 #044004 #040440

tetradic

#400404 #224004 #044040 #220440

square

#400404 #224004 #044040 #220440

split-complementary

#400404 #044022 #042240

monochromatic

#1D0202 #1D0202 #400404 #7A0808 #B30B0B

Accessibility & contrast

On white

16.97

#400404 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#400404 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400404

16.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400404	#FFFFFF	#000000	##FFFFFF
##400404	1.00	16.97	1.24	16.97
#FFFFFF	16.97	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171403

Deuteranopia (green-blind)

#262102

Tritanopia (blue-blind)

#480005

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #400404;
/* rgb */ color: rgb(64, 4, 4);
/* oklch */ color: oklch(23.9% 0.090 27.5);

Tailwind

colors: {
  custom: {
    50: '#7a4b48',
    500: '#400404',
    950: '#000000',
  },
}

SCSS

$custom: #400404;
$custom-light: #7a4b48;
$custom-dark: #000000;

JSON

{
  "hex": "#400404",
  "rgb": {
    "r": 64,
    "g": 4,
    "b": 4
  },
  "hsl": {
    "h": 0,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.23889,
    "c": 0.09012,
    "h": 27.5
  },
  "luminance": 0.01186
}

Semantic roles & 50–950 ramp

primary

#400404

secondary

#1F8181

accent

#FEFE29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0100

muted

#7C7777

Preview Lab

Preview with #400404

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

Preview Lab → · Contrast checker → · Palette generator →