#3F0B17#3F0B17

#3F0B17 is a very dark, moderate red. Relative luminance 0.014; OKLCH L 24.9% C 0.080 H 11.9°. Best body text is #FFFFFF at 16.51:1 contrast (WCAG AA passes).

Color values

HEX	#3F0B17
RGB	rgb(63, 11, 23)
HSL	hsl(346, 70%, 15%)
HSV	hsv(346, 83%, 25%)
CMYK	cmyk(0%, 82.5%, 63.5%, 75.3%)
CIE-LAB	lab(11.68, 25.83, 6.54)
CIE-LCH	lch(11.68, 26.65, 14.21°)
OKLab	oklab(24.88% 0.0781 0.0164)
OKLCH	oklch(24.88% 0.08 11.9)
XYZ	xyz(2.3244, 1.3583, 0.9502)
Luminance	0.0136 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0B17 #0B3F33

analogous

#3F0B31 #3F0B17 #3F190B

triadic

#3F0B17 #173F0B #0B173F

tetradic

#3F0B17 #313F0B #0B3F33 #190B3F

square

#3F0B17 #313F0B #0B3F33 #190B3F

split-complementary

#3F0B17 #0B3F19 #0B313F

monochromatic

#1A050A #1A050A #3F0B17 #73142A #A71D3D

Accessibility & contrast

On white

16.51

#3F0B17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#3F0B17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0B17

16.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0B17	#FFFFFF	#000000	##FFFFFF
##3F0B17	1.00	16.51	1.27	16.51
#FFFFFF	16.51	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181817

Deuteranopia (green-blind)

#262316

Tritanopia (blue-blind)

#460210

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #3f0b17;
/* rgb */ color: rgb(63, 11, 23);
/* oklch */ color: oklch(24.9% 0.080 11.9);

Tailwind

colors: {
  custom: {
    50: '#784f53',
    500: '#3f0b17',
    950: '#000000',
  },
}

SCSS

$custom: #3f0b17;
$custom-light: #784f53;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0b17",
  "rgb": {
    "r": 63,
    "g": 11,
    "b": 23
  },
  "hsl": {
    "h": 346.154,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.24875,
    "c": 0.07981,
    "h": 11.9
  },
  "luminance": 0.01358
}

Semantic roles & 50–950 ramp

primary

#3F0B17

secondary

#2A7C69

accent

#EDC43B

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#090202

muted

#7B7878

Preview Lab

Preview with #3F0B17

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

Preview Lab → · Contrast checker → · Palette generator →