#3F0B05#3F0B05

#3F0B05 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.5% C 0.081 H 31.0°. Best body text is #FFFFFF at 16.65:1 contrast (WCAG AA passes).

Color values

HEX	#3F0B05
RGB	rgb(63, 11, 5)
HSL	hsl(6, 85%, 13%)
HSV	hsv(6, 92%, 25%)
CMYK	cmyk(0%, 82.5%, 92.1%, 75.3%)
CIE-LAB	lab(11.33, 24.64, 15.52)
CIE-LCH	lch(11.33, 29.13, 32.20°)
OKLab	oklab(24.5% 0.0698 0.042)
OKLCH	oklch(24.5% 0.081 31)
XYZ	xyz(2.1972, 1.3074, 0.2802)
Luminance	0.0131 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0B05 #05393F

analogous

#3F051C #3F0B05 #3F2805

triadic

#3F0B05 #053F0B #0B053F

tetradic

#3F0B05 #1C3F05 #05393F #28053F

square

#3F0B05 #1C3F05 #05393F #28053F

split-complementary

#3F0B05 #053F28 #051C3F

monochromatic

#1C0502 #1C0502 #3F0B05 #781509 #B01F0E

Accessibility & contrast

On white

16.65

#3F0B05 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#3F0B05 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0B05

16.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0B05	#FFFFFF	#000000	##FFFFFF
##3F0B05	1.00	16.65	1.26	16.65
#FFFFFF	16.65	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1704

Deuteranopia (green-blind)

#282203

Tritanopia (blue-blind)

#46000A

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3f0b05;
/* rgb */ color: rgb(63, 11, 5);
/* oklch */ color: oklch(24.5% 0.081 31.0);

Tailwind

colors: {
  custom: {
    50: '#794e49',
    500: '#3f0b05',
    950: '#000000',
  },
}

SCSS

$custom: #3f0b05;
$custom-light: #794e49;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0b05",
  "rgb": {
    "r": 63,
    "g": 11,
    "b": 5
  },
  "hsl": {
    "h": 6.207,
    "s": 85.294,
    "l": 13.333
  },
  "oklch": {
    "l": 0.24502,
    "c": 0.08143,
    "h": 31
  },
  "luminance": 0.01307
}

Semantic roles & 50–950 ramp

primary

#3F0B05

secondary

#207680

accent

#E6FC2C

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0200

muted

#7C7877

Preview Lab

Preview with #3F0B05

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

Preview Lab → · Contrast checker → · Palette generator →