#37100C#37100C

#37100C is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.7% C 0.063 H 28.6°. Best body text is #FFFFFF at 16.91:1 contrast (WCAG AA passes).

Color values

HEX	#37100C
RGB	rgb(55, 16, 12)
HSL	hsl(6, 64%, 13%)
HSV	hsv(6, 78%, 22%)
CMYK	cmyk(0%, 70.9%, 78.2%, 78.4%)
CIE-LAB	lab(10.63, 19.17, 11.39)
CIE-LCH	lch(10.63, 22.30, 30.71°)
OKLab	oklab(23.69% 0.0557 0.0304)
OKLCH	oklch(23.69% 0.063 28.6)
XYZ	xyz(1.8274, 1.2096, 0.4850)
Luminance	0.0121 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37100C #0C3337

analogous

#370C1D #37100C #37250C

triadic

#37100C #0C3710 #100C37

tetradic

#37100C #1D370C #0C3337 #250C37

square

#37100C #1D370C #0C3337 #250C37

split-complementary

#37100C #0C3725 #0C1D37

monochromatic

#190705 #190705 #37100C #691F17 #9B2D22

Accessibility & contrast

On white

16.91

#37100C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#37100C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37100C

16.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37100C	#FFFFFF	#000000	##FFFFFF
##37100C	1.00	16.91	1.24	16.91
#FFFFFF	16.91	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A170B

Deuteranopia (green-blind)

#24200B

Tritanopia (blue-blind)

#3D080F

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #37100c;
/* rgb */ color: rgb(55, 16, 12);
/* oklch */ color: oklch(23.7% 0.063 28.6);

Tailwind

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

SCSS

$custom: #37100c;
$custom-light: #71504c;
$custom-dark: #000000;

JSON

{
  "hex": "#37100c",
  "rgb": {
    "r": 55,
    "g": 16,
    "b": 12
  },
  "hsl": {
    "h": 5.581,
    "s": 64.179,
    "l": 13.137
  },
  "oklch": {
    "l": 0.23687,
    "c": 0.06345,
    "h": 28.6
  },
  "luminance": 0.01209
}

Semantic roles & 50–950 ramp

primary

#37100C

secondary

#2C6C73

accent

#D8E741

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080201

muted

#7B7877

Preview Lab

Preview with #37100C

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

Preview Lab → · Contrast checker → · Palette generator →