#400D0D#400D0D

#400D0D is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.1% C 0.079 H 24.9°. Best body text is #FFFFFF at 16.39:1 contrast (WCAG AA passes).

Color values

HEX	#400D0D
RGB	rgb(64, 13, 13)
HSL	hsl(0, 66%, 15%)
HSV	hsv(0, 80%, 25%)
CMYK	cmyk(0%, 79.7%, 79.7%, 74.9%)
CIE-LAB	lab(12.01, 24.56, 13.12)
CIE-LCH	lch(12.01, 27.85, 28.12°)
OKLab	oklab(25.09% 0.0716 0.0332)
OKLCH	oklch(25.09% 0.079 24.9)
XYZ	xyz(2.3312, 1.4072, 0.5296)
Luminance	0.0141 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#400D0D #0D4040

analogous

#400D26 #400D0D #40260D

triadic

#400D0D #0D400D #0D0D40

tetradic

#400D0D #26400D #0D4040 #260D40

square

#400D0D #26400D #0D4040 #260D40

split-complementary

#400D0D #0D4026 #0D2640

monochromatic

#190505 #190505 #400D0D #731717 #A62222

Accessibility & contrast

On white

16.39

#400D0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#400D0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #400D0D

16.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##400D0D	#FFFFFF	#000000	##FFFFFF
##400D0D	1.00	16.39	1.28	16.39
#FFFFFF	16.39	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B190C

Deuteranopia (green-blind)

#28240B

Tritanopia (blue-blind)

#47010E

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #400d0d;
/* rgb */ color: rgb(64, 13, 13);
/* oklch */ color: oklch(25.1% 0.079 24.9);

Tailwind

colors: {
  custom: {
    50: '#7a504c',
    500: '#400d0d',
    950: '#000000',
  },
}

SCSS

$custom: #400d0d;
$custom-light: #7a504c;
$custom-dark: #000000;

JSON

{
  "hex": "#400d0d",
  "rgb": {
    "r": 64,
    "g": 13,
    "b": 13
  },
  "hsl": {
    "h": 0,
    "s": 66.234,
    "l": 15.098
  },
  "oklch": {
    "l": 0.2509,
    "c": 0.07891,
    "h": 24.9
  },
  "luminance": 0.01407
}

Semantic roles & 50–950 ramp

primary

#400D0D

secondary

#2D7C7C

accent

#E9E93F

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #400D0D

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

Preview Lab → · Contrast checker → · Palette generator →