#370A15#370A15

#370A15 is a very dark, moderate red. Relative luminance 0.011; OKLCH L 23.0% C 0.071 H 10.3°. Best body text is #FFFFFF at 17.26:1 contrast (WCAG AA passes).

Color values

HEX	#370A15
RGB	rgb(55, 10, 21)
HSL	hsl(345, 69%, 13%)
HSV	hsv(345, 82%, 22%)
CMYK	cmyk(0%, 81.8%, 61.8%, 78.4%)
CIE-LAB	lab(9.67, 23.11, 4.91)
CIE-LCH	lch(9.67, 23.62, 11.98°)
OKLab	oklab(23.04% 0.0701 0.0127)
OKLCH	oklch(23.04% 0.071 10.3)
XYZ	xyz(1.8196, 1.0837, 0.8227)
Luminance	0.0108 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370A15 #0A372C

analogous

#370A2B #370A15 #37150A

triadic

#370A15 #15370A #0A1537

tetradic

#370A15 #2B370A #0A372C #150A37

square

#370A15 #2B370A #0A372C #150A37

split-complementary

#370A15 #0A3715 #0A2B37

monochromatic

#1A050A #1A050A #370A15 #6B1329 #9F1D3D

Accessibility & contrast

On white

17.26

#370A15 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#370A15 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370A15

17.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370A15	#FFFFFF	#000000	##FFFFFF
##370A15	1.00	17.26	1.22	17.26
#FFFFFF	17.26	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151515

Deuteranopia (green-blind)

#211E14

Tritanopia (blue-blind)

#3D030E

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #370a15;
/* rgb */ color: rgb(55, 10, 21);
/* oklch */ color: oklch(23.0% 0.071 10.3);

Tailwind

colors: {
  custom: {
    50: '#714d52',
    500: '#370a15',
    950: '#000000',
  },
}

SCSS

$custom: #370a15;
$custom-light: #714d52;
$custom-dark: #000000;

JSON

{
  "hex": "#370a15",
  "rgb": {
    "r": 55,
    "g": 10,
    "b": 21
  },
  "hsl": {
    "h": 345.333,
    "s": 69.231,
    "l": 12.745
  },
  "oklch": {
    "l": 0.23039,
    "c": 0.07123,
    "h": 10.3
  },
  "luminance": 0.01083
}

Semantic roles & 50–950 ramp

primary

#370A15

secondary

#287462

accent

#ECC13C

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#080102

muted

#7B7778

Preview Lab

Preview with #370A15

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

Preview Lab → · Contrast checker → · Palette generator →