#3F0911#3F0911

#3F0911 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.5% C 0.082 H 17.8°. Best body text is #FFFFFF at 16.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F0911
RGB	rgb(63, 9, 17)
HSL	hsl(351, 75%, 14%)
HSV	hsv(351, 86%, 25%)
CMYK	cmyk(0%, 85.7%, 73%, 75.3%)
CIE-LAB	lab(11.23, 26.19, 9.90)
CIE-LCH	lch(11.23, 28.00, 20.70°)
OKLab	oklab(24.49% 0.078 0.0251)
OKLCH	oklch(24.49% 0.082 17.8)
XYZ	xyz(2.2490, 1.2929, 0.6613)
Luminance	0.0129 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0911 #093F37

analogous

#3F092C #3F0911 #3F1C09

triadic

#3F0911 #113F09 #09113F

tetradic

#3F0911 #2C3F09 #093F37 #1C093F

square

#3F0911 #2C3F09 #093F37 #1C093F

split-complementary

#3F0911 #093F1C #092C3F

monochromatic

#1B0407 #1B0407 #3F0911 #75111F #AA182E

Accessibility & contrast

On white

16.69

#3F0911 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#3F0911 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0911

16.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0911	#FFFFFF	#000000	##FFFFFF
##3F0911	1.00	16.69	1.26	16.69
#FFFFFF	16.69	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181711

Deuteranopia (green-blind)

#26220F

Tritanopia (blue-blind)

#46000C

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3f0911;
/* rgb */ color: rgb(63, 9, 17);
/* oklch */ color: oklch(24.5% 0.082 17.8);

Tailwind

colors: {
  custom: {
    50: '#794e4f',
    500: '#3f0911',
    950: '#000000',
  },
}

SCSS

$custom: #3f0911;
$custom-light: #794e4f;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0911",
  "rgb": {
    "r": 63,
    "g": 9,
    "b": 17
  },
  "hsl": {
    "h": 351.111,
    "s": 75,
    "l": 14.118
  },
  "oklch": {
    "l": 0.24493,
    "c": 0.08189,
    "h": 17.8
  },
  "luminance": 0.01293
}

Semantic roles & 50–950 ramp

primary

#3F0911

secondary

#277D70

accent

#F2D636

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #3F0911

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

Preview Lab → · Contrast checker → · Palette generator →