#400A03#400A03

#400A03 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.6% C 0.084 H 32.3°. Best body text is #FFFFFF at 16.63:1 contrast (WCAG AA passes).

Color values

HEX	#400A03
RGB	rgb(64, 10, 3)
HSL	hsl(7, 91%, 13%)
HSV	hsv(7, 95%, 25%)
CMYK	cmyk(0%, 84.4%, 95.3%, 74.9%)
CIE-LAB	lab(11.37, 25.36, 16.44)
CIE-LCH	lch(11.37, 30.22, 32.95°)
OKLab	oklab(24.57% 0.0712 0.0449)
OKLCH	oklch(24.57% 0.084 32.3)
XYZ	xyz(2.2396, 1.3140, 0.2218)
Luminance	0.0131 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400A03 #033940

analogous

#40031A #400A03 #402803

triadic

#400A03 #03400A #0A0340

tetradic

#400A03 #1A4003 #033940 #280340

square

#400A03 #1A4003 #033940 #280340

split-complementary

#400A03 #034028 #031A40

monochromatic

#1D0501 #1D0501 #400A03 #7A1306 #B51C08

Accessibility & contrast

On white

16.63

#400A03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#400A03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400A03

16.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400A03	#FFFFFF	#000000	##FFFFFF
##400A03	1.00	16.63	1.26	16.63
#FFFFFF	16.63	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1702

Deuteranopia (green-blind)

#282301

Tritanopia (blue-blind)

#480009

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #400a03;
/* rgb */ color: rgb(64, 10, 3);
/* oklch */ color: oklch(24.6% 0.084 32.3);

Tailwind

colors: {
  custom: {
    50: '#7a4e48',
    500: '#400a03',
    950: '#000000',
  },
}

SCSS

$custom: #400a03;
$custom-light: #7a4e48;
$custom-dark: #000000;

JSON

{
  "hex": "#400a03",
  "rgb": {
    "r": 64,
    "g": 10,
    "b": 3
  },
  "hsl": {
    "h": 6.885,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.24569,
    "c": 0.08418,
    "h": 32.3
  },
  "luminance": 0.01314
}

Semantic roles & 50–950 ramp

primary

#400A03

secondary

#1D7682

accent

#E6FF29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0200

muted

#7C7877

Preview Lab

Preview with #400A03

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

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