#370B03#370B03

#370B03 is a very dark, moderate red. Relative luminance 0.011; OKLCH L 22.8% C 0.072 H 34.4°. Best body text is #FFFFFF at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#370B03
RGB	rgb(55, 11, 3)
HSL	hsl(9, 90%, 11%)
HSV	hsv(9, 95%, 22%)
CMYK	cmyk(0%, 80%, 94.5%, 78.4%)
CIE-LAB	lab(9.47, 21.28, 13.46)
CIE-LCH	lch(9.47, 25.18, 32.31°)
OKLab	oklab(22.77% 0.0596 0.0407)
OKLCH	oklch(22.77% 0.072 34.4)
XYZ	xyz(1.7119, 1.0584, 0.2003)
Luminance	0.0106 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370B03 #032F37

analogous

#370315 #370B03 #372503

triadic

#370B03 #03370B #0B0337

tetradic

#370B03 #153703 #032F37 #250337

square

#370B03 #153703 #032F37 #250337

split-complementary

#370B03 #033725 #031537

monochromatic

#1D0602 #1D0602 #370B03 #711706 #AB2209

Accessibility & contrast

On white

17.33

#370B03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#370B03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370B03

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370B03	#FFFFFF	#000000	##FFFFFF
##370B03	1.00	17.33	1.21	17.33
#FFFFFF	17.33	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181402

Deuteranopia (green-blind)

#231E02

Tritanopia (blue-blind)

#3E0109

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #370b03;
/* rgb */ color: rgb(55, 11, 3);
/* oklch */ color: oklch(22.8% 0.072 34.4);

Tailwind

colors: {
  custom: {
    50: '#724d48',
    500: '#370b03',
    950: '#000000',
  },
}

SCSS

$custom: #370b03;
$custom-light: #724d48;
$custom-dark: #000000;

JSON

{
  "hex": "#370b03",
  "rgb": {
    "r": 55,
    "g": 11,
    "b": 3
  },
  "hsl": {
    "h": 9.231,
    "s": 89.655,
    "l": 11.373
  },
  "oklch": {
    "l": 0.22767,
    "c": 0.07217,
    "h": 34.4
  },
  "luminance": 0.01058
}

Semantic roles & 50–950 ramp

primary

#370B03

secondary

#1C6B7A

accent

#DEFF29

background

#F7F4F4

surface

#EDE7E6

border

#C8C3C2

text

#080100

muted

#7B7777

Preview Lab

Preview with #370B03

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

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