#3F111B#3F111B

#3F111B is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.8% C 0.072 H 10.6°. Best body text is #FFFFFF at 16.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F111B
RGB	rgb(63, 17, 27)
HSL	hsl(347, 58%, 16%)
HSV	hsv(347, 73%, 25%)
CMYK	cmyk(0%, 73%, 57.1%, 75.3%)
CIE-LAB	lab(12.84, 23.35, 5.16)
CIE-LCH	lch(12.84, 23.91, 12.47°)
OKLab	oklab(25.78% 0.0708 0.0132)
OKLCH	oklch(25.78% 0.072 10.6)
XYZ	xyz(2.4484, 1.5371, 1.2045)
Luminance	0.0154 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F111B #113F35

analogous

#3F1132 #3F111B #3F1E11

triadic

#3F111B #1B3F11 #111B3F

tetradic

#3F111B #323F11 #113F35 #1E113F

square

#3F111B #323F11 #113F35 #1E113F

split-complementary

#3F111B #113F1E #11323F

monochromatic

#18070A #18070A #3F111B #6F1E30 #9F2B44

Accessibility & contrast

On white

16.06

#3F111B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#3F111B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F111B

16.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F111B	#FFFFFF	#000000	##FFFFFF
##3F111B	1.00	16.06	1.31	16.06
#FFFFFF	16.06	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1B1B

Deuteranopia (green-blind)

#27251A

Tritanopia (blue-blind)

#450A15

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #3f111b;
/* rgb */ color: rgb(63, 17, 27);
/* oklch */ color: oklch(25.8% 0.072 10.6);

Tailwind

colors: {
  custom: {
    50: '#775257',
    500: '#3f111b',
    950: '#000000',
  },
}

SCSS

$custom: #3f111b;
$custom-light: #775257;
$custom-dark: #000000;

JSON

{
  "hex": "#3f111b",
  "rgb": {
    "r": 63,
    "g": 17,
    "b": 27
  },
  "hsl": {
    "h": 346.957,
    "s": 57.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.25779,
    "c": 0.07201,
    "h": 10.6
  },
  "luminance": 0.01537
}

Semantic roles & 50–950 ramp

primary

#3F111B

secondary

#337869

accent

#E1BF47

background

#F7F4F5

surface

#EDE7E9

border

#C8C3C5

text

#090203

muted

#7B7878

Preview Lab

Preview with #3F111B

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

Preview Lab → · Contrast checker → · Palette generator →