#3F0D0D#3F0D0D

#3F0D0D is a very dark, moderate red. Relative luminance 0.014; OKLCH L 24.9% C 0.078 H 24.8°. Best body text is #FFFFFF at 16.47:1 contrast (WCAG AA passes).

Color values

HEX	#3F0D0D
RGB	rgb(63, 13, 13)
HSL	hsl(0, 66%, 15%)
HSV	hsv(0, 79%, 25%)
CMYK	cmyk(0%, 79.4%, 79.4%, 75.3%)
CIE-LAB	lab(11.78, 24.16, 12.79)
CIE-LCH	lch(11.78, 27.34, 27.88°)
OKLab	oklab(24.88% 0.0705 0.0326)
OKLCH	oklch(24.88% 0.078 24.8)
XYZ	xyz(2.2667, 1.3740, 0.5265)
Luminance	0.0137 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0D0D #0D3F3F

analogous

#3F0D26 #3F0D0D #3F260D

triadic

#3F0D0D #0D3F0D #0D0D3F

tetradic

#3F0D0D #263F0D #0D3F3F #260D3F

square

#3F0D0D #263F0D #0D3F3F #260D3F

split-complementary

#3F0D0D #0D3F26 #0D263F

monochromatic

#190505 #190505 #3F0D0D #721717 #A42222

Accessibility & contrast

On white

16.47

#3F0D0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#3F0D0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0D0D

16.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0D0D	#FFFFFF	#000000	##FFFFFF
##3F0D0D	1.00	16.47	1.27	16.47
#FFFFFF	16.47	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B180C

Deuteranopia (green-blind)

#28230B

Tritanopia (blue-blind)

#46010E

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #3f0d0d;
/* rgb */ color: rgb(63, 13, 13);
/* oklch */ color: oklch(24.9% 0.078 24.8);

Tailwind

colors: {
  custom: {
    50: '#794f4c',
    500: '#3f0d0d',
    950: '#000000',
  },
}

SCSS

$custom: #3f0d0d;
$custom-light: #794f4c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0d0d",
  "rgb": {
    "r": 63,
    "g": 13,
    "b": 13
  },
  "hsl": {
    "h": 0,
    "s": 65.789,
    "l": 14.902
  },
  "oklch": {
    "l": 0.24883,
    "c": 0.07764,
    "h": 24.8
  },
  "luminance": 0.01374
}

Semantic roles & 50–950 ramp

primary

#3F0D0D

secondary

#2D7B7B

accent

#E9E93F

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #3F0D0D

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

Preview Lab → · Contrast checker → · Palette generator →