#400B0D#400B0D

#400B0D is a very dark, moderate red. Relative luminance 0.014; OKLCH L 24.8% C 0.081 H 23.5°. Best body text is #FFFFFF at 16.51:1 contrast (WCAG AA passes).

Color values

HEX	#400B0D
RGB	rgb(64, 11, 13)
HSL	hsl(358, 71%, 15%)
HSV	hsv(358, 83%, 25%)
CMYK	cmyk(0%, 82.8%, 79.7%, 74.9%)
CIE-LAB	lab(11.68, 25.46, 12.68)
CIE-LCH	lch(11.68, 28.44, 26.48°)
OKLab	oklab(24.85% 0.0744 0.0323)
OKLCH	oklch(24.85% 0.081 23.5)
XYZ	xyz(2.3069, 1.3587, 0.5215)
Luminance	0.0136 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400B0D #0B403E

analogous

#400B28 #400B0D #40240B

triadic

#400B0D #0D400B #0B0D40

tetradic

#400B0D #28400B #0B403E #240B40

square

#400B0D #28400B #0B403E #240B40

split-complementary

#400B0D #0B4024 #0B2840

monochromatic

#1A0405 #1A0405 #400B0D #741418 #A81D22

Accessibility & contrast

On white

16.51

#400B0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#400B0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400B0D

16.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400B0D	#FFFFFF	#000000	##FFFFFF
##400B0D	1.00	16.51	1.27	16.51
#FFFFFF	16.51	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A180D

Deuteranopia (green-blind)

#28230B

Tritanopia (blue-blind)

#47000C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #400b0d;
/* rgb */ color: rgb(64, 11, 13);
/* oklch */ color: oklch(24.8% 0.081 23.5);

Tailwind

colors: {
  custom: {
    50: '#7a4f4c',
    500: '#400b0d',
    950: '#000000',
  },
}

SCSS

$custom: #400b0d;
$custom-light: #7a4f4c;
$custom-dark: #000000;

JSON

{
  "hex": "#400b0d",
  "rgb": {
    "r": 64,
    "g": 11,
    "b": 13
  },
  "hsl": {
    "h": 357.736,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.24847,
    "c": 0.08115,
    "h": 23.5
  },
  "luminance": 0.01358
}

Semantic roles & 50–950 ramp

primary

#400B0D

secondary

#2A7D7A

accent

#EDE73A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #400B0D

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

Preview Lab → · Contrast checker → · Palette generator →