#37100F#37100F

#37100F is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.8% C 0.063 H 24.6°. Best body text is #FFFFFF at 16.89:1 contrast (WCAG AA passes).

Color values

HEX	#37100F
RGB	rgb(55, 16, 15)
HSL	hsl(2, 57%, 14%)
HSV	hsv(2, 73%, 22%)
CMYK	cmyk(0%, 70.9%, 72.7%, 78.4%)
CIE-LAB	lab(10.69, 19.40, 9.99)
CIE-LCH	lch(10.69, 21.83, 27.24°)
OKLab	oklab(23.75% 0.0571 0.0261)
OKLCH	oklch(23.75% 0.063 24.6)
XYZ	xyz(1.8472, 1.2175, 0.5896)
Luminance	0.0122 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37100F #0F3637

analogous

#370F22 #37100F #37240F

triadic

#37100F #0F3710 #100F37

tetradic

#37100F #22370F #0F3637 #240F37

square

#37100F #22370F #0F3637 #240F37

split-complementary

#37100F #0F3724 #0F2237

monochromatic

#180707 #180707 #37100F #671E1C #972C29

Accessibility & contrast

On white

16.89

#37100F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#37100F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37100F

16.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37100F	#FFFFFF	#000000	##FFFFFF
##37100F	1.00	16.89	1.24	16.89
#FFFFFF	16.89	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A180F

Deuteranopia (green-blind)

#24200E

Tritanopia (blue-blind)

#3D0810

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #37100f;
/* rgb */ color: rgb(55, 16, 15);
/* oklch */ color: oklch(23.8% 0.063 24.6);

Tailwind

colors: {
  custom: {
    50: '#71504e',
    500: '#37100f',
    950: '#000000',
  },
}

SCSS

$custom: #37100f;
$custom-light: #71504e;
$custom-dark: #000000;

JSON

{
  "hex": "#37100f",
  "rgb": {
    "r": 55,
    "g": 16,
    "b": 15
  },
  "hsl": {
    "h": 1.5,
    "s": 57.143,
    "l": 13.725
  },
  "oklch": {
    "l": 0.2375,
    "c": 0.06281,
    "h": 24.6
  },
  "luminance": 0.01217
}

Semantic roles & 50–950 ramp

primary

#37100F

secondary

#317071

accent

#DDE047

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080201

muted

#7B7877

Preview Lab

Preview with #37100F

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

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