#370A0F#370A0F

#370A0F is a very dark, moderate red. Relative luminance 0.011; OKLCH L 22.9% C 0.071 H 18.7°. Best body text is #FFFFFF at 17.32:1 contrast (WCAG AA passes).

Color values

HEX	#370A0F
RGB	rgb(55, 10, 15)
HSL	hsl(353, 69%, 13%)
HSV	hsv(353, 82%, 22%)
CMYK	cmyk(0%, 81.8%, 72.7%, 78.4%)
CIE-LAB	lab(9.51, 22.57, 8.34)
CIE-LCH	lch(9.51, 24.06, 20.27°)
OKLab	oklab(22.87% 0.0672 0.0227)
OKLCH	oklch(22.87% 0.071 18.7)
XYZ	xyz(1.7705, 1.0640, 0.5640)
Luminance	0.0106 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370A0F #0A3732

analogous

#370A25 #370A0F #371B0A

triadic

#370A0F #0F370A #0A0F37

tetradic

#370A0F #25370A #0A3732 #1B0A37

square

#370A0F #25370A #0A3732 #1B0A37

split-complementary

#370A0F #0A371B #0A2537

monochromatic

#1A0507 #1A0507 #370A0F #6B131D #9F1D2B

Accessibility & contrast

On white

17.32

#370A0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#370A0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370A0F

17.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370A0F	#FFFFFF	#000000	##FFFFFF
##370A0F	1.00	17.32	1.21	17.32
#FFFFFF	17.32	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16140F

Deuteranopia (green-blind)

#211E0E

Tritanopia (blue-blind)

#3D020C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #370a0f;
/* rgb */ color: rgb(55, 10, 15);
/* oklch */ color: oklch(22.9% 0.071 18.7);

Tailwind

colors: {
  custom: {
    50: '#724d4e',
    500: '#370a0f',
    950: '#000000',
  },
}

SCSS

$custom: #370a0f;
$custom-light: #724d4e;
$custom-dark: #000000;

JSON

{
  "hex": "#370a0f",
  "rgb": {
    "r": 55,
    "g": 10,
    "b": 15
  },
  "hsl": {
    "h": 353.333,
    "s": 69.231,
    "l": 12.745
  },
  "oklch": {
    "l": 0.22872,
    "c": 0.07087,
    "h": 18.7
  },
  "luminance": 0.01064
}

Semantic roles & 50–950 ramp

primary

#370A0F

secondary

#28746C

accent

#ECD83C

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080101

muted

#7B7777

Preview Lab

Preview with #370A0F

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

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