#400D0A#400D0A

#400D0A is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.0% C 0.079 H 27.7°. Best body text is #FFFFFF at 16.41:1 contrast (WCAG AA passes).

Color values

HEX	#400D0A
RGB	rgb(64, 13, 10)
HSL	hsl(3, 73%, 15%)
HSV	hsv(3, 84%, 25%)
CMYK	cmyk(0%, 79.7%, 84.4%, 74.9%)
CIE-LAB	lab(11.96, 24.39, 14.39)
CIE-LCH	lch(11.96, 28.32, 30.54°)
OKLab	oklab(25.04% 0.0703 0.0369)
OKLCH	oklch(25.04% 0.079 27.7)
XYZ	xyz(2.3133, 1.4001, 0.4355)
Luminance	0.0140 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400D0A #0A3D40

analogous

#400A22 #400D0A #40280A

triadic

#400D0A #0A400D #0D0A40

tetradic

#400D0A #22400A #0A3D40 #280A40

square

#400D0A #22400A #0A3D40 #280A40

split-complementary

#400D0A #0A4028 #0A2240

monochromatic

#1A0504 #1A0504 #400D0A #751812 #AA231B

Accessibility & contrast

On white

16.41

#400D0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#400D0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400D0A

16.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400D0A	#FFFFFF	#000000	##FFFFFF
##400D0A	1.00	16.41	1.28	16.41
#FFFFFF	16.41	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C1809

Deuteranopia (green-blind)

#282308

Tritanopia (blue-blind)

#47010D

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #400d0a;
/* rgb */ color: rgb(64, 13, 10);
/* oklch */ color: oklch(25.0% 0.079 27.7);

Tailwind

colors: {
  custom: {
    50: '#7a504b',
    500: '#400d0a',
    950: '#000000',
  },
}

SCSS

$custom: #400d0a;
$custom-light: #7a504b;
$custom-dark: #000000;

JSON

{
  "hex": "#400d0a",
  "rgb": {
    "r": 64,
    "g": 13,
    "b": 10
  },
  "hsl": {
    "h": 3.333,
    "s": 72.973,
    "l": 14.51
  },
  "oklch": {
    "l": 0.25039,
    "c": 0.07942,
    "h": 27.7
  },
  "luminance": 0.014
}

Semantic roles & 50–950 ramp

primary

#400D0A

secondary

#29797D

accent

#E5F038

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #400D0A

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

Preview Lab → · Contrast checker → · Palette generator →