#3F151D#3F151D

#3F151D is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.5% C 0.066 H 11.1°. Best body text is #FFFFFF at 15.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F151D
RGB	rgb(63, 21, 29)
HSL	hsl(349, 50%, 16%)
HSV	hsv(349, 67%, 25%)
CMYK	cmyk(0%, 66.7%, 54%, 75.3%)
CIE-LAB	lab(13.72, 21.38, 4.92)
CIE-LCH	lch(13.72, 21.93, 12.96°)
OKLab	oklab(26.46% 0.0648 0.0127)
OKLCH	oklch(26.46% 0.066 11.1)
XYZ	xyz(2.5400, 1.6821, 1.3531)
Luminance	0.0168 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F151D #153F37

analogous

#3F1532 #3F151D #3F2215

triadic

#3F151D #1D3F15 #151D3F

tetradic

#3F151D #323F15 #153F37 #22153F

square

#3F151D #323F15 #153F37 #22153F

split-complementary

#3F151D #153F22 #15323F

monochromatic

#17080B #17080B #3F151D #6D2432 #9B3447

Accessibility & contrast

On white

15.71

#3F151D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#3F151D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F151D

15.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F151D	#FFFFFF	#000000	##FFFFFF
##3F151D	1.00	15.71	1.34	15.71
#FFFFFF	15.71	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1E1D

Deuteranopia (green-blind)

#29261C

Tritanopia (blue-blind)

#450F18

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #3f151d;
/* rgb */ color: rgb(63, 21, 29);
/* oklch */ color: oklch(26.5% 0.066 11.1);

Tailwind

colors: {
  custom: {
    50: '#775458',
    500: '#3f151d',
    950: '#000000',
  },
}

SCSS

$custom: #3f151d;
$custom-light: #775458;
$custom-dark: #000000;

JSON

{
  "hex": "#3f151d",
  "rgb": {
    "r": 63,
    "g": 21,
    "b": 29
  },
  "hsl": {
    "h": 348.571,
    "s": 50,
    "l": 16.471
  },
  "oklch": {
    "l": 0.26456,
    "c": 0.066,
    "h": 11.1
  },
  "luminance": 0.01682
}

Semantic roles & 50–950 ramp

primary

#3F151D

secondary

#39776B

accent

#DABF4E

background

#F7F4F5

surface

#EDE8E9

border

#C8C4C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #3F151D

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

Preview Lab → · Contrast checker → · Palette generator →