#3F0D0B#3F0D0B

#3F0D0B is a very dark, moderate red. Relative luminance 0.014; OKLCH L 24.8% C 0.078 H 26.8°. Best body text is #FFFFFF at 16.49:1 contrast (WCAG AA passes).

Color values

HEX	#3F0D0B
RGB	rgb(63, 13, 11)
HSL	hsl(2, 70%, 15%)
HSV	hsv(2, 83%, 25%)
CMYK	cmyk(0%, 79.4%, 82.5%, 75.3%)
CIE-LAB	lab(11.75, 24.05, 13.65)
CIE-LCH	lch(11.75, 27.65, 29.58°)
OKLab	oklab(24.85% 0.0696 0.0351)
OKLCH	oklch(24.85% 0.078 26.8)
XYZ	xyz(2.2545, 1.3691, 0.4621)
Luminance	0.0137 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0D0B #0B3D3F

analogous

#3F0B23 #3F0D0B #3F270B

triadic

#3F0D0B #0B3F0D #0D0B3F

tetradic

#3F0D0B #233F0B #0B3D3F #270B3F

square

#3F0D0B #233F0B #0B3D3F #270B3F

split-complementary

#3F0D0B #0B3F27 #0B233F

monochromatic

#1A0505 #1A0505 #3F0D0B #731814 #A7231D

Accessibility & contrast

On white

16.49

#3F0D0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#3F0D0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0D0B

16.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0D0B	#FFFFFF	#000000	##FFFFFF
##3F0D0B	1.00	16.49	1.27	16.49
#FFFFFF	16.49	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B180A

Deuteranopia (green-blind)

#282309

Tritanopia (blue-blind)

#46010D

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #3f0d0b;
/* rgb */ color: rgb(63, 13, 11);
/* oklch */ color: oklch(24.8% 0.078 26.8);

Tailwind

colors: {
  custom: {
    50: '#794f4b',
    500: '#3f0d0b',
    950: '#000000',
  },
}

SCSS

$custom: #3f0d0b;
$custom-light: #794f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0d0b",
  "rgb": {
    "r": 63,
    "g": 13,
    "b": 11
  },
  "hsl": {
    "h": 2.308,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.24848,
    "c": 0.07797,
    "h": 26.8
  },
  "luminance": 0.01369
}

Semantic roles & 50–950 ramp

primary

#3F0D0B

secondary

#2A797C

accent

#E6ED3B

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #3F0D0B

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

Preview Lab → · Contrast checker → · Palette generator →