#400C0A#400C0A

#400C0A is a very dark, moderate red. Relative luminance 0.014; OKLCH L 24.9% C 0.081 H 27.0°. Best body text is #FFFFFF at 16.47:1 contrast (WCAG AA passes).

Color values

HEX	#400C0A
RGB	rgb(64, 12, 10)
HSL	hsl(2, 73%, 15%)
HSV	hsv(2, 84%, 25%)
CMYK	cmyk(0%, 81.2%, 84.4%, 74.9%)
CIE-LAB	lab(11.79, 24.85, 14.16)
CIE-LCH	lch(11.79, 28.60, 29.68°)
OKLab	oklab(24.91% 0.0717 0.0366)
OKLCH	oklch(24.91% 0.081 27)
XYZ	xyz(2.3009, 1.3752, 0.4314)
Luminance	0.0138 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400C0A #0A3E40

analogous

#400A23 #400C0A #40270A

triadic

#400C0A #0A400C #0C0A40

tetradic

#400C0A #23400A #0A3E40 #270A40

square

#400C0A #23400A #0A3E40 #270A40

split-complementary

#400C0A #0A4027 #0A2340

monochromatic

#1A0504 #1A0504 #400C0A #751612 #AA201B

Accessibility & contrast

On white

16.47

#400C0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#400C0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400C0A

16.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400C0A	#FFFFFF	#000000	##FFFFFF
##400C0A	1.00	16.47	1.27	16.47
#FFFFFF	16.47	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1809

Deuteranopia (green-blind)

#282308

Tritanopia (blue-blind)

#47000C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #400c0a;
/* rgb */ color: rgb(64, 12, 10);
/* oklch */ color: oklch(24.9% 0.081 27.0);

Tailwind

colors: {
  custom: {
    50: '#7a4f4b',
    500: '#400c0a',
    950: '#000000',
  },
}

SCSS

$custom: #400c0a;
$custom-light: #7a4f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#400c0a",
  "rgb": {
    "r": 64,
    "g": 12,
    "b": 10
  },
  "hsl": {
    "h": 2.222,
    "s": 72.973,
    "l": 14.51
  },
  "oklch": {
    "l": 0.24914,
    "c": 0.08051,
    "h": 27
  },
  "luminance": 0.01375
}

Semantic roles & 50–950 ramp

primary

#400C0A

secondary

#297A7D

accent

#E9F038

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #400C0A

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

Preview Lab → · Contrast checker → · Palette generator →