#3F131D#3F131D

#3F131D is a dark, moderate red. Relative luminance 0.016; OKLCH L 26.1% C 0.069 H 9.3°. Best body text is #FFFFFF at 15.88:1 contrast (WCAG AA passes).

Color values

HEX	#3F131D
RGB	rgb(63, 19, 29)
HSL	hsl(346, 54%, 16%)
HSV	hsv(346, 70%, 25%)
CMYK	cmyk(0%, 69.8%, 54%, 75.3%)
CIE-LAB	lab(13.30, 22.50, 4.33)
CIE-LCH	lch(13.30, 22.91, 10.89°)
OKLab	oklab(26.14% 0.0683 0.0112)
OKLCH	oklch(26.14% 0.069 9.3)
XYZ	xyz(2.5047, 1.6115, 1.3413)
Luminance	0.0161 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F131D #133F35

analogous

#3F1333 #3F131D #3F1F13

triadic

#3F131D #1D3F13 #131D3F

tetradic

#3F131D #333F13 #133F35 #1F133F

square

#3F131D #333F13 #133F35 #1F133F

split-complementary

#3F131D #133F1F #13333F

monochromatic

#18070B #18070B #3F131D #6E2133 #9D2F48

Accessibility & contrast

On white

15.88

#3F131D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#3F131D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F131D

15.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F131D	#FFFFFF	#000000	##FFFFFF
##3F131D	1.00	15.88	1.32	15.88
#FFFFFF	15.88	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C1D1D

Deuteranopia (green-blind)

#28251C

Tritanopia (blue-blind)

#450D17

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #3f131d;
/* rgb */ color: rgb(63, 19, 29);
/* oklch */ color: oklch(26.1% 0.069 9.3);

Tailwind

colors: {
  custom: {
    50: '#775358',
    500: '#3f131d',
    950: '#000000',
  },
}

SCSS

$custom: #3f131d;
$custom-light: #775358;
$custom-dark: #000000;

JSON

{
  "hex": "#3f131d",
  "rgb": {
    "r": 63,
    "g": 19,
    "b": 29
  },
  "hsl": {
    "h": 346.364,
    "s": 53.659,
    "l": 16.078
  },
  "oklch": {
    "l": 0.2614,
    "c": 0.06922,
    "h": 9.3
  },
  "luminance": 0.01611
}

Semantic roles & 50–950 ramp

primary

#3F131D

secondary

#367869

accent

#DDBC4B

background

#F7F4F5

surface

#EDE7E9

border

#C8C3C5

text

#090203

muted

#7B7878

Preview Lab

Preview with #3F131D

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

Preview Lab → · Contrast checker → · Palette generator →