#400D0B#400D0B

#400D0B is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.1% C 0.079 H 26.8°. Best body text is #FFFFFF at 16.40:1 contrast (WCAG AA passes).

Color values

HEX	#400D0B
RGB	rgb(64, 13, 11)
HSL	hsl(2, 71%, 15%)
HSV	hsv(2, 83%, 25%)
CMYK	cmyk(0%, 79.7%, 82.8%, 74.9%)
CIE-LAB	lab(11.97, 24.44, 13.99)
CIE-LCH	lch(11.97, 28.16, 29.79°)
OKLab	oklab(25.06% 0.0707 0.0357)
OKLCH	oklch(25.06% 0.079 26.8)
XYZ	xyz(2.3189, 1.4023, 0.4651)
Luminance	0.0140 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400D0B #0B3E40

analogous

#400B24 #400D0B #40280B

triadic

#400D0B #0B400D #0D0B40

tetradic

#400D0B #24400B #0B3E40 #280B40

square

#400D0B #24400B #0B3E40 #280B40

split-complementary

#400D0B #0B4028 #0B2440

monochromatic

#1A0504 #1A0504 #400D0B #741814 #A8221D

Accessibility & contrast

On white

16.40

#400D0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#400D0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400D0B

16.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400D0B	#FFFFFF	#000000	##FFFFFF
##400D0B	1.00	16.40	1.28	16.40
#FFFFFF	16.40	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C180A

Deuteranopia (green-blind)

#282409

Tritanopia (blue-blind)

#47010D

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #400d0b;
/* rgb */ color: rgb(64, 13, 11);
/* oklch */ color: oklch(25.1% 0.079 26.8);

Tailwind

colors: {
  custom: {
    50: '#7a504b',
    500: '#400d0b',
    950: '#000000',
  },
}

SCSS

$custom: #400d0b;
$custom-light: #7a504b;
$custom-dark: #000000;

JSON

{
  "hex": "#400d0b",
  "rgb": {
    "r": 64,
    "g": 13,
    "b": 11
  },
  "hsl": {
    "h": 2.264,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.25055,
    "c": 0.07924,
    "h": 26.8
  },
  "luminance": 0.01402
}

Semantic roles & 50–950 ramp

primary

#400D0B

secondary

#2A7A7D

accent

#E7ED3A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #400D0B

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

Preview Lab → · Contrast checker → · Palette generator →