#370405#370405

#370405 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.8% C 0.080 H 25.8°. Best body text is #FFFFFF at 17.77:1 contrast (WCAG AA passes).

Color values

HEX	#370405
RGB	rgb(55, 4, 5)
HSL	hsl(359, 86%, 12%)
HSV	hsv(359, 93%, 22%)
CMYK	cmyk(0%, 92.7%, 90.9%, 78.4%)
CIE-LAB	lab(8.22, 24.98, 10.85)
CIE-LCH	lch(8.22, 27.23, 23.47°)
OKLab	oklab(21.85% 0.0719 0.0347)
OKLCH	oklch(21.85% 0.08 25.8)
XYZ	xyz(1.6466, 0.9103, 0.2326)
Luminance	0.0091 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370405 #043736

analogous

#37041F #370405 #371D04

triadic

#370405 #053704 #040537

tetradic

#370405 #1F3704 #043736 #1D0437

square

#370405 #1F3704 #043736 #1D0437

split-complementary

#370405 #04371D #041F37

monochromatic

#1D0203 #1D0203 #370405 #70080A #A90C0F

Accessibility & contrast

On white

17.77

#370405 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#370405 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370405

17.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370405	#FFFFFF	#000000	##FFFFFF
##370405	1.00	17.77	1.18	17.77
#FFFFFF	17.77	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141105

Deuteranopia (green-blind)

#201C04

Tritanopia (blue-blind)

#3E0005

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #370405;
/* rgb */ color: rgb(55, 4, 5);
/* oklch */ color: oklch(21.8% 0.080 25.8);

Tailwind

colors: {
  custom: {
    50: '#724949',
    500: '#370405',
    950: '#000000',
  },
}

SCSS

$custom: #370405;
$custom-light: #724949;
$custom-dark: #000000;

JSON

{
  "hex": "#370405",
  "rgb": {
    "r": 55,
    "g": 4,
    "b": 5
  },
  "hsl": {
    "h": 358.824,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.21847,
    "c": 0.07986,
    "h": 25.8
  },
  "luminance": 0.0091
}

Semantic roles & 50–950 ramp

primary

#370405

secondary

#1E7977

accent

#FDF92B

background

#F7F4F4

surface

#EDE7E6

border

#C8C3C2

text

#090100

muted

#7B7777

Preview Lab

Preview with #370405

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

Preview Lab → · Contrast checker → · Palette generator →