#3F0A0B#3F0A0B

#3F0A0B is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.5% C 0.081 H 24.7°. Best body text is #FFFFFF at 16.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F0A0B
RGB	rgb(63, 10, 11)
HSL	hsl(359, 73%, 14%)
HSV	hsv(359, 84%, 25%)
CMYK	cmyk(0%, 84.1%, 82.5%, 75.3%)
CIE-LAB	lab(11.26, 25.39, 12.98)
CIE-LCH	lch(11.26, 28.52, 27.08°)
OKLab	oklab(24.48% 0.0739 0.0339)
OKLCH	oklch(24.48% 0.081 24.7)
XYZ	xyz(2.2191, 1.2983, 0.4503)
Luminance	0.0130 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0A0B #0A3F3E

analogous

#3F0A26 #3F0A0B #3F240A

triadic

#3F0A0B #0B3F0A #0A0B3F

tetradic

#3F0A0B #263F0A #0A3F3E #240A3F

square

#3F0A0B #263F0A #0A3F3E #240A3F

split-complementary

#3F0A0B #0A3F24 #0A263F

monochromatic

#1A0405 #1A0405 #3F0A0B #741214 #A91B1D

Accessibility & contrast

On white

16.67

#3F0A0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#3F0A0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0A0B

16.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0A0B	#FFFFFF	#000000	##FFFFFF
##3F0A0B	1.00	16.67	1.26	16.67
#FFFFFF	16.67	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A170A

Deuteranopia (green-blind)

#272209

Tritanopia (blue-blind)

#46000B

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3f0a0b;
/* rgb */ color: rgb(63, 10, 11);
/* oklch */ color: oklch(24.5% 0.081 24.7);

Tailwind

colors: {
  custom: {
    50: '#794e4b',
    500: '#3f0a0b',
    950: '#000000',
  },
}

SCSS

$custom: #3f0a0b;
$custom-light: #794e4b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0a0b",
  "rgb": {
    "r": 63,
    "g": 10,
    "b": 11
  },
  "hsl": {
    "h": 358.868,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.24484,
    "c": 0.08126,
    "h": 24.7
  },
  "luminance": 0.01298
}

Semantic roles & 50–950 ramp

primary

#3F0A0B

secondary

#297C7B

accent

#EFEC38

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #3F0A0B

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

Preview Lab → · Contrast checker → · Palette generator →