#3F0A17#3F0A17

#3F0A17 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.8% C 0.081 H 11.3°. Best body text is #FFFFFF at 16.57:1 contrast (WCAG AA passes).

Color values

HEX	#3F0A17
RGB	rgb(63, 10, 23)
HSL	hsl(345, 73%, 14%)
HSV	hsv(345, 84%, 25%)
CMYK	cmyk(0%, 84.1%, 63.5%, 75.3%)
CIE-LAB	lab(11.53, 26.26, 6.33)
CIE-LCH	lch(11.53, 27.01, 13.56°)
OKLab	oklab(24.76% 0.0795 0.0159)
OKLCH	oklch(24.76% 0.081 11.3)
XYZ	xyz(2.3133, 1.3360, 0.9465)
Luminance	0.0134 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0A17 #0A3F32

analogous

#3F0A32 #3F0A17 #3F180A

triadic

#3F0A17 #173F0A #0A173F

tetradic

#3F0A17 #323F0A #0A3F32 #180A3F

square

#3F0A17 #323F0A #0A3F32 #180A3F

split-complementary

#3F0A17 #0A3F18 #0A323F

monochromatic

#1A040A #1A040A #3F0A17 #74122A #A91B3E

Accessibility & contrast

On white

16.57

#3F0A17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#3F0A17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0A17

16.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0A17	#FFFFFF	#000000	##FFFFFF
##3F0A17	1.00	16.57	1.27	16.57
#FFFFFF	16.57	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181817

Deuteranopia (green-blind)

#252216

Tritanopia (blue-blind)

#46010F

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #3f0a17;
/* rgb */ color: rgb(63, 10, 23);
/* oklch */ color: oklch(24.8% 0.081 11.3);

Tailwind

colors: {
  custom: {
    50: '#784e53',
    500: '#3f0a17',
    950: '#000000',
  },
}

SCSS

$custom: #3f0a17;
$custom-light: #784e53;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0a17",
  "rgb": {
    "r": 63,
    "g": 10,
    "b": 23
  },
  "hsl": {
    "h": 345.283,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.24763,
    "c": 0.08104,
    "h": 11.3
  },
  "luminance": 0.01336
}

Semantic roles & 50–950 ramp

primary

#3F0A17

secondary

#297C68

accent

#EFC238

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#090202

muted

#7B7878

Preview Lab

Preview with #3F0A17

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

Preview Lab → · Contrast checker → · Palette generator →