#37040F#37040F

#37040F is a very dark, moderate red. Relative luminance 0.009; OKLCH L 22.1% C 0.079 H 14.1°. Best body text is #FFFFFF at 17.69:1 contrast (WCAG AA passes).

Color values

HEX	#37040F
RGB	rgb(55, 4, 15)
HSL	hsl(347, 86%, 12%)
HSV	hsv(347, 93%, 22%)
CMYK	cmyk(0%, 92.7%, 72.7%, 78.4%)
CIE-LAB	lab(8.43, 25.61, 6.77)
CIE-LCH	lch(8.43, 26.49, 14.82°)
OKLab	oklab(22.07% 0.0769 0.0194)
OKLCH	oklch(22.07% 0.079 14.1)
XYZ	xyz(1.7054, 0.9338, 0.5423)
Luminance	0.0093 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37040F #04372C

analogous

#370429 #37040F #371304

triadic

#37040F #0F3704 #040F37

tetradic

#37040F #293704 #04372C #130437

square

#37040F #293704 #04372C #130437

split-complementary

#37040F #043713 #042937

monochromatic

#1D0208 #1D0208 #37040F #70081F #A90C2E

Accessibility & contrast

On white

17.69

#37040F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#37040F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37040F

17.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37040F	#FFFFFF	#000000	##FFFFFF
##37040F	1.00	17.69	1.19	17.69
#FFFFFF	17.69	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#12110F

Deuteranopia (green-blind)

#1F1C0E

Tritanopia (blue-blind)

#3D0008

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #37040f;
/* rgb */ color: rgb(55, 4, 15);
/* oklch */ color: oklch(22.1% 0.079 14.1);

Tailwind

colors: {
  custom: {
    50: '#72494e',
    500: '#37040f',
    950: '#000000',
  },
}

SCSS

$custom: #37040f;
$custom-light: #72494e;
$custom-dark: #000000;

JSON

{
  "hex": "#37040f",
  "rgb": {
    "r": 55,
    "g": 4,
    "b": 15
  },
  "hsl": {
    "h": 347.059,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.22066,
    "c": 0.07931,
    "h": 14.1
  },
  "luminance": 0.00934
}

Semantic roles & 50–950 ramp

primary

#37040F

secondary

#1E7965

accent

#FDCF2B

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #37040F

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

Preview Lab → · Contrast checker → · Palette generator →