#400B04#400B04

#400B04 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.7% C 0.083 H 31.9°. Best body text is #FFFFFF at 16.57:1 contrast (WCAG AA passes).

Color values

HEX	#400B04
RGB	rgb(64, 11, 4)
HSL	hsl(7, 88%, 13%)
HSV	hsv(7, 94%, 25%)
CMYK	cmyk(0%, 82.8%, 93.8%, 74.9%)
CIE-LAB	lab(11.54, 24.98, 16.26)
CIE-LCH	lch(11.54, 29.81, 33.06°)
OKLab	oklab(24.7% 0.0704 0.0439)
OKLCH	oklch(24.7% 0.083 31.9)
XYZ	xyz(2.2562, 1.3385, 0.2544)
Luminance	0.0134 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400B04 #043940

analogous

#40041B #400B04 #402904

triadic

#400B04 #04400B #0B0440

tetradic

#400B04 #1B4004 #043940 #290440

square

#400B04 #1B4004 #043940 #290440

split-complementary

#400B04 #044029 #041B40

monochromatic

#1D0502 #1D0502 #400B04 #7A1508 #B31F0B

Accessibility & contrast

On white

16.57

#400B04 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#400B04 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400B04

16.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400B04	#FFFFFF	#000000	##FFFFFF
##400B04	1.00	16.57	1.27	16.57
#FFFFFF	16.57	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1703

Deuteranopia (green-blind)

#282302

Tritanopia (blue-blind)

#47000A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #400b04;
/* rgb */ color: rgb(64, 11, 4);
/* oklch */ color: oklch(24.7% 0.083 31.9);

Tailwind

colors: {
  custom: {
    50: '#7a4f48',
    500: '#400b04',
    950: '#000000',
  },
}

SCSS

$custom: #400b04;
$custom-light: #7a4f48;
$custom-dark: #000000;

JSON

{
  "hex": "#400b04",
  "rgb": {
    "r": 64,
    "g": 11,
    "b": 4
  },
  "hsl": {
    "h": 7,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.24699,
    "c": 0.08293,
    "h": 31.9
  },
  "luminance": 0.01338
}

Semantic roles & 50–950 ramp

primary

#400B04

secondary

#1F7681

accent

#E6FE29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0200

muted

#7C7877

Preview Lab

Preview with #400B04

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

Preview Lab → · Contrast checker → · Palette generator →