#400308#400308

#400308 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.8% C 0.091 H 23.2°. Best body text is #FFFFFF at 17.01:1 contrast (WCAG AA passes).

Color values

HEX	#400308
RGB	rgb(64, 3, 8)
HSL	hsl(355, 91%, 13%)
HSV	hsv(355, 95%, 25%)
CMYK	cmyk(0%, 95.3%, 87.5%, 74.9%)
CIE-LAB	lab(10.36, 28.69, 12.98)
CIE-LCH	lch(10.36, 31.49, 24.35°)
OKLab	oklab(23.84% 0.0834 0.0357)
OKLCH	oklch(23.84% 0.091 23.2)
XYZ	xyz(2.1910, 1.1730, 0.3407)
Luminance	0.0117 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400308 #03403B

analogous

#400326 #400308 #401C03

triadic

#400308 #084003 #030840

tetradic

#400308 #264003 #03403B #1C0340

square

#400308 #264003 #03403B #1C0340

split-complementary

#400308 #03401C #032640

monochromatic

#1D0104 #1D0104 #400308 #7A060F #B50817

Accessibility & contrast

On white

17.01

#400308 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#400308 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400308

17.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400308	#FFFFFF	#000000	##FFFFFF
##400308	1.00	17.01	1.23	17.01
#FFFFFF	17.01	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161408

Deuteranopia (green-blind)

#262106

Tritanopia (blue-blind)

#470005

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #400308;
/* rgb */ color: rgb(64, 3, 8);
/* oklch */ color: oklch(23.8% 0.091 23.2);

Tailwind

colors: {
  custom: {
    50: '#7a4b4a',
    500: '#400308',
    950: '#000000',
  },
}

SCSS

$custom: #400308;
$custom-light: #7a4b4a;
$custom-dark: #000000;

JSON

{
  "hex": "#400308",
  "rgb": {
    "r": 64,
    "g": 3,
    "b": 8
  },
  "hsl": {
    "h": 355.082,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.23839,
    "c": 0.09068,
    "h": 23.2
  },
  "luminance": 0.01173
}

Semantic roles & 50–950 ramp

primary

#400308

secondary

#1D827A

accent

#FFED29

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #400308

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

Preview Lab → · Contrast checker → · Palette generator →