#3F170A#3F170A

#3F170A is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.4% C 0.067 H 38.3°. Best body text is #FFFFFF at 15.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F170A
RGB	rgb(63, 23, 10)
HSL	hsl(15, 73%, 14%)
HSV	hsv(15, 84%, 25%)
CMYK	cmyk(0%, 63.5%, 84.1%, 75.3%)
CIE-LAB	lab(13.78, 18.56, 16.80)
CIE-LCH	lch(13.78, 25.03, 42.14°)
OKLab	oklab(26.37% 0.0523 0.0412)
OKLCH	oklch(26.37% 0.067 38.3)
XYZ	xyz(2.4113, 1.6918, 0.4867)
Luminance	0.0169 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F170A #0A323F

analogous

#3F0A18 #3F170A #3F320A

triadic

#3F170A #0A3F17 #170A3F

tetradic

#3F170A #183F0A #0A323F #320A3F

square

#3F170A #183F0A #0A323F #320A3F

split-complementary

#3F170A #0A3F32 #0A183F

monochromatic

#1A0A04 #1A0A04 #3F170A #742A12 #A93E1B

Accessibility & contrast

On white

15.69

#3F170A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#3F170A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F170A

15.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F170A	#FFFFFF	#000000	##FFFFFF
##3F170A	1.00	15.69	1.34	15.69
#FFFFFF	15.69	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#221E09

Deuteranopia (green-blind)

#2C2609

Tritanopia (blue-blind)

#460E14

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #3f170a;
/* rgb */ color: rgb(63, 23, 10);
/* oklch */ color: oklch(26.4% 0.067 38.3);

Tailwind

colors: {
  custom: {
    50: '#78554b',
    500: '#3f170a',
    950: '#000000',
  },
}

SCSS

$custom: #3f170a;
$custom-light: #78554b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f170a",
  "rgb": {
    "r": 63,
    "g": 23,
    "b": 10
  },
  "hsl": {
    "h": 14.717,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.26372,
    "c": 0.0666,
    "h": 38.3
  },
  "luminance": 0.01691
}

Semantic roles & 50–950 ramp

primary

#3F170A

secondary

#29687C

accent

#C2EF38

background

#F7F5F4

surface

#EEE9E7

border

#C9C5C3

text

#090301

muted

#7B7877

Preview Lab

Preview with #3F170A

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

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