#3F191B#3F191B

#3F191B is a dark, muted red. Relative luminance 0.018; OKLCH L 27.1% C 0.059 H 18.7°. Best body text is #FFFFFF at 15.37:1 contrast (WCAG AA passes).

Color values

HEX	#3F191B
RGB	rgb(63, 25, 27)
HSL	hsl(357, 43%, 17%)
HSV	hsv(357, 60%, 25%)
CMYK	cmyk(0%, 60.3%, 57.1%, 75.3%)
CIE-LAB	lab(14.58, 18.77, 7.56)
CIE-LCH	lch(14.58, 20.24, 21.93°)
OKLab	oklab(27.08% 0.0564 0.019)
OKLCH	oklch(27.08% 0.059 18.7)
XYZ	xyz(2.5955, 1.8314, 1.2535)
Luminance	0.0183 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F191B #193F3D

analogous

#3F192E #3F191B #3F2A19

triadic

#3F191B #1B3F19 #191B3F

tetradic

#3F191B #2E3F19 #193F3D #2A193F

square

#3F191B #2E3F19 #193F3D #2A193F

split-complementary

#3F191B #193F2A #192E3F

monochromatic

#160909 #160909 #3F191B #6B2A2E #973C41

Accessibility & contrast

On white

15.37

#3F191B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#3F191B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F191B

15.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F191B	#FFFFFF	#000000	##FFFFFF
##3F191B	1.00	15.37	1.37	15.37
#FFFFFF	15.37	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21201B

Deuteranopia (green-blind)

#2B281A

Tritanopia (blue-blind)

#45141A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #3f191b;
/* rgb */ color: rgb(63, 25, 27);
/* oklch */ color: oklch(27.1% 0.059 18.7);

Tailwind

colors: {
  custom: {
    50: '#775757',
    500: '#3f191b',
    950: '#000000',
  },
}

SCSS

$custom: #3f191b;
$custom-light: #775757;
$custom-dark: #000000;

JSON

{
  "hex": "#3f191b",
  "rgb": {
    "r": 63,
    "g": 25,
    "b": 27
  },
  "hsl": {
    "h": 356.842,
    "s": 43.182,
    "l": 17.255
  },
  "oklch": {
    "l": 0.27082,
    "c": 0.05949,
    "h": 18.7
  },
  "luminance": 0.01831
}

Semantic roles & 50–950 ramp

primary

#3F191B

secondary

#3F7572

accent

#D3CC55

background

#F7F5F5

surface

#EDE9E9

border

#C8C5C5

text

#090303

muted

#7B7878

Preview Lab

Preview with #3F191B

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

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