#3F151B#3F151B

#3F151B is a dark, moderate red. Relative luminance 0.017; OKLCH L 26.4% C 0.066 H 14.1°. Best body text is #FFFFFF at 15.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F151B
RGB	rgb(63, 21, 27)
HSL	hsl(351, 50%, 16%)
HSV	hsv(351, 67%, 25%)
CMYK	cmyk(0%, 66.7%, 57.1%, 75.3%)
CIE-LAB	lab(13.67, 21.15, 6.31)
CIE-LCH	lch(13.67, 22.07, 16.61°)
OKLab	oklab(26.4% 0.0638 0.016)
OKLCH	oklch(26.4% 0.066 14.1)
XYZ	xyz(2.5161, 1.6725, 1.2270)
Luminance	0.0167 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F151B #153F39

analogous

#3F1530 #3F151B #3F2415

triadic

#3F151B #1B3F15 #151B3F

tetradic

#3F151B #303F15 #153F39 #24153F

square

#3F151B #303F15 #153F39 #24153F

split-complementary

#3F151B #153F24 #15303F

monochromatic

#17080A #17080A #3F151B #6D242F #9B3442

Accessibility & contrast

On white

15.74

#3F151B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#3F151B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F151B

15.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F151B	#FFFFFF	#000000	##FFFFFF
##3F151B	1.00	15.74	1.33	15.74
#FFFFFF	15.74	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E1E1B

Deuteranopia (green-blind)

#29261A

Tritanopia (blue-blind)

#450F17

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #3f151b;
/* rgb */ color: rgb(63, 21, 27);
/* oklch */ color: oklch(26.4% 0.066 14.1);

Tailwind

colors: {
  custom: {
    50: '#775457',
    500: '#3f151b',
    950: '#000000',
  },
}

SCSS

$custom: #3f151b;
$custom-light: #775457;
$custom-dark: #000000;

JSON

{
  "hex": "#3f151b",
  "rgb": {
    "r": 63,
    "g": 21,
    "b": 27
  },
  "hsl": {
    "h": 351.429,
    "s": 50,
    "l": 16.471
  },
  "oklch": {
    "l": 0.26395,
    "c": 0.0658,
    "h": 14.1
  },
  "luminance": 0.01672
}

Semantic roles & 50–950 ramp

primary

#3F151B

secondary

#39776E

accent

#DAC64E

background

#F7F4F5

surface

#EDE8E9

border

#C8C4C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #3F151B

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

Preview Lab → · Contrast checker → · Palette generator →