#400A10#400A10

#400A10 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.8% C 0.082 H 19.8°. Best body text is #FFFFFF at 16.55:1 contrast (WCAG AA passes).

Color values

HEX	#400A10
RGB	rgb(64, 10, 16)
HSL	hsl(353, 73%, 15%)
HSV	hsv(353, 84%, 25%)
CMYK	cmyk(0%, 84.4%, 75%, 74.9%)
CIE-LAB	lab(11.59, 26.07, 11.00)
CIE-LCH	lch(11.59, 28.29, 22.87°)
OKLab	oklab(24.8% 0.0772 0.0277)
OKLCH	oklch(24.8% 0.082 19.8)
XYZ	xyz(2.3167, 1.3448, 0.6277)
Luminance	0.0134 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400A10 #0A403A

analogous

#400A2B #400A10 #401F0A

triadic

#400A10 #10400A #0A1040

tetradic

#400A10 #2B400A #0A403A #1F0A40

square

#400A10 #2B400A #0A403A #1F0A40

split-complementary

#400A10 #0A401F #0A2B40

monochromatic

#1A0407 #1A0407 #400A10 #75121D #AA1B2A

Accessibility & contrast

On white

16.55

#400A10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#400A10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400A10

16.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400A10	#FFFFFF	#000000	##FFFFFF
##400A10	1.00	16.55	1.27	16.55
#FFFFFF	16.55	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#191710

Deuteranopia (green-blind)

#27230E

Tritanopia (blue-blind)

#47000D

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #400a10;
/* rgb */ color: rgb(64, 10, 16);
/* oklch */ color: oklch(24.8% 0.082 19.8);

Tailwind

colors: {
  custom: {
    50: '#7a4e4e',
    500: '#400a10',
    950: '#000000',
  },
}

SCSS

$custom: #400a10;
$custom-light: #7a4e4e;
$custom-dark: #000000;

JSON

{
  "hex": "#400a10",
  "rgb": {
    "r": 64,
    "g": 10,
    "b": 16
  },
  "hsl": {
    "h": 353.333,
    "s": 72.973,
    "l": 14.51
  },
  "oklch": {
    "l": 0.24795,
    "c": 0.08198,
    "h": 19.8
  },
  "luminance": 0.01344
}

Semantic roles & 50–950 ramp

primary

#400A10

secondary

#297D74

accent

#F0DB38

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #400A10

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

Preview Lab → · Contrast checker → · Palette generator →