#40040D#40040D

#40040D is a very dark, moderate red. Relative luminance 0.012; OKLCH L 24.0% C 0.089 H 19.3°. Best body text is #FFFFFF at 16.92:1 contrast (WCAG AA passes).

Color values

HEX#40040D
RGBrgb(64, 4, 13)
HSLhsl(351, 88%, 13%)
HSVhsv(351, 94%, 25%)
CMYKcmyk(0%, 93.8%, 79.7%, 74.9%)
CIE-LABlab(10.60, 28.49, 11.19)
CIE-LCHlch(10.60, 30.60, 21.44°)
OKLaboklab(24.05% 0.0841 0.0295)
OKLCHoklch(24.05% 0.089 19.3)
XYZxyz(2.2307, 1.2062, 0.4961)
Luminance0.0121 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40040D #044037
analogous
#40042B #40040D #401904
triadic
#40040D #0D4004 #040D40
tetradic
#40040D #2B4004 #044037 #190440
square
#40040D #2B4004 #044037 #190440
split-complementary
#40040D #044019 #042B40
monochromatic
#1D0206 #1D0206 #40040D #7A0819 #B30B24

Accessibility & contrast

On white

16.92
#40040D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.24
#40040D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40040D
16.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40040D#FFFFFF#000000##FFFFFF
##40040D1.0016.921.2416.92
#FFFFFF16.921.0021.001.00
#0000001.2421.001.0021.00
##FFFFFF16.921.0021.001.00

Color blindness preview

Protanopia (red-blind)
#16140D
Deuteranopia (green-blind)
#26210B
Tritanopia (blue-blind)
#470008
Achromatopsia (no color)
#1D1D1D

Design tokens & code

CSS
--color: #40040d;
/* rgb */ color: rgb(64, 4, 13);
/* oklch */ color: oklch(24.0% 0.089 19.3);
Tailwind
colors: {
  custom: {
    50: '#7a4b4c',
    500: '#40040d',
    950: '#000000',
  },
}
SCSS
$custom: #40040d;
$custom-light: #7a4b4c;
$custom-dark: #000000;
JSON
{
  "hex": "#40040d",
  "rgb": {
    "r": 64,
    "g": 4,
    "b": 13
  },
  "hsl": {
    "h": 351,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.24048,
    "c": 0.08912,
    "h": 19.3
  },
  "luminance": 0.01206
}

Semantic roles & 50–950 ramp

primary
#40040D
secondary
#1F8172
accent
#FEDE29
background
#F7F4F4
surface
#EEE7E7
border
#C9C3C3
text
#0A0101
muted
#7C7777

Preview Lab

Preview with #40040D

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

Preview Lab → · Contrast checker → · Palette generator →

#40040D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva