#400B03#400B03

#400B03 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.7% C 0.083 H 32.9°. Best body text is #FFFFFF at 16.57:1 contrast (WCAG AA passes).

Color values

HEX	#400B03
RGB	rgb(64, 11, 3)
HSL	hsl(8, 91%, 13%)
HSV	hsv(8, 95%, 25%)
CMYK	cmyk(0%, 82.8%, 95.3%, 74.9%)
CIE-LAB	lab(11.53, 24.93, 16.65)
CIE-LCH	lch(11.53, 29.98, 33.74°)
OKLab	oklab(24.68% 0.0699 0.0452)
OKLCH	oklch(24.68% 0.083 32.9)
XYZ	xyz(2.2507, 1.3363, 0.2255)
Luminance	0.0134 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400B03 #033840

analogous

#400319 #400B03 #402903

triadic

#400B03 #03400B #0B0340

tetradic

#400B03 #194003 #033840 #290340

square

#400B03 #194003 #033840 #290340

split-complementary

#400B03 #034029 #031940

monochromatic

#1D0501 #1D0501 #400B03 #7A1506 #B51F08

Accessibility & contrast

On white

16.57

#400B03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#400B03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400B03

16.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400B03	#FFFFFF	#000000	##FFFFFF
##400B03	1.00	16.57	1.27	16.57
#FFFFFF	16.57	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1702

Deuteranopia (green-blind)

#282301

Tritanopia (blue-blind)

#480009

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #400b03;
/* rgb */ color: rgb(64, 11, 3);
/* oklch */ color: oklch(24.7% 0.083 32.9);

Tailwind

colors: {
  custom: {
    50: '#7a4f48',
    500: '#400b03',
    950: '#000000',
  },
}

SCSS

$custom: #400b03;
$custom-light: #7a4f48;
$custom-dark: #000000;

JSON

{
  "hex": "#400b03",
  "rgb": {
    "r": 64,
    "g": 11,
    "b": 3
  },
  "hsl": {
    "h": 7.869,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.24684,
    "c": 0.08323,
    "h": 32.9
  },
  "luminance": 0.01336
}

Semantic roles & 50–950 ramp

primary

#400B03

secondary

#1D7582

accent

#E3FF29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0200

muted

#7C7877

Preview Lab

Preview with #400B03

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

Preview Lab → · Contrast checker → · Palette generator →