#400904#400904

#400904 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.5% C 0.085 H 30.6°. Best body text is #FFFFFF at 16.68:1 contrast (WCAG AA passes).

Color values

HEX	#400904
RGB	rgb(64, 9, 4)
HSL	hsl(5, 88%, 13%)
HSV	hsv(5, 94%, 25%)
CMYK	cmyk(0%, 85.9%, 93.8%, 74.9%)
CIE-LAB	lab(11.24, 25.83, 15.84)
CIE-LCH	lch(11.24, 30.30, 31.52°)
OKLab	oklab(24.47% 0.073 0.0432)
OKLCH	oklch(24.47% 0.085 30.6)
XYZ	xyz(2.2342, 1.2945, 0.2471)
Luminance	0.0129 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400904 #043B40

analogous

#40041D #400904 #402704

triadic

#400904 #044009 #090440

tetradic

#400904 #1D4004 #043B40 #270440

square

#400904 #1D4004 #043B40 #270440

split-complementary

#400904 #044027 #041D40

monochromatic

#1D0402 #1D0402 #400904 #7A1108 #B3190B

Accessibility & contrast

On white

16.68

#400904 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#400904 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400904

16.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400904	#FFFFFF	#000000	##FFFFFF
##400904	1.00	16.68	1.26	16.68
#FFFFFF	16.68	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A1603

Deuteranopia (green-blind)

#282202

Tritanopia (blue-blind)

#480008

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #400904;
/* rgb */ color: rgb(64, 9, 4);
/* oklch */ color: oklch(24.5% 0.085 30.6);

Tailwind

colors: {
  custom: {
    50: '#7a4e48',
    500: '#400904',
    950: '#000000',
  },
}

SCSS

$custom: #400904;
$custom-light: #7a4e48;
$custom-dark: #000000;

JSON

{
  "hex": "#400904",
  "rgb": {
    "r": 64,
    "g": 9,
    "b": 4
  },
  "hsl": {
    "h": 5,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.24472,
    "c": 0.08486,
    "h": 30.6
  },
  "luminance": 0.01294
}

Semantic roles & 50–950 ramp

primary

#400904

secondary

#1F7981

accent

#EDFE29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0200

muted

#7C7877

Preview Lab

Preview with #400904

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

Preview Lab → · Contrast checker → · Palette generator →