#40040C#40040C

#40040C is a very dark, moderate red. Relative luminance 0.012; OKLCH L 24.0% C 0.089 H 20.2°. Best body text is #FFFFFF at 16.93:1 contrast (WCAG AA passes).

Color values

HEX	#40040C
RGB	rgb(64, 4, 12)
HSL	hsl(352, 88%, 13%)
HSV	hsv(352, 94%, 25%)
CMYK	cmyk(0%, 93.8%, 81.2%, 74.9%)
CIE-LAB	lab(10.58, 28.43, 11.63)
CIE-LCH	lch(10.58, 30.72, 22.24°)
OKLab	oklab(24.03% 0.0837 0.0308)
OKLCH	oklch(24.03% 0.089 20.2)
XYZ	xyz(2.2244, 1.2037, 0.4630)
Luminance	0.0120 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40040C #044038

analogous

#40042A #40040C #401A04

triadic

#40040C #0C4004 #040C40

tetradic

#40040C #2A4004 #044038 #1A0440

square

#40040C #2A4004 #044038 #1A0440

split-complementary

#40040C #04401A #042A40

monochromatic

#1D0205 #1D0205 #40040C #7A0817 #B30B22

Accessibility & contrast

On white

16.93

#40040C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#40040C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40040C

16.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40040C	#FFFFFF	#000000	##FFFFFF
##40040C	1.00	16.93	1.24	16.93
#FFFFFF	16.93	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17140C

Deuteranopia (green-blind)

#26210A

Tritanopia (blue-blind)

#470007

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #40040c;
/* rgb */ color: rgb(64, 4, 12);
/* oklch */ color: oklch(24.0% 0.089 20.2);

Tailwind

colors: {
  custom: {
    50: '#7a4b4c',
    500: '#40040c',
    950: '#000000',
  },
}

SCSS

$custom: #40040c;
$custom-light: #7a4b4c;
$custom-dark: #000000;

JSON

{
  "hex": "#40040c",
  "rgb": {
    "r": 64,
    "g": 4,
    "b": 12
  },
  "hsl": {
    "h": 352,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.24029,
    "c": 0.08915,
    "h": 20.2
  },
  "luminance": 0.01203
}

Semantic roles & 50–950 ramp

primary

#40040C

secondary

#1F8174

accent

#FEE229

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #40040C

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

Preview Lab → · Contrast checker → · Palette generator →