#3F0409#3F0409

#3F0409 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.7% C 0.088 H 22.7°. Best body text is #FFFFFF at 17.04:1 contrast (WCAG AA passes).

Color values

HEX	#3F0409
RGB	rgb(63, 4, 9)
HSL	hsl(355, 88%, 13%)
HSV	hsv(355, 94%, 25%)
CMYK	cmyk(0%, 93.7%, 85.7%, 75.3%)
CIE-LAB	lab(10.29, 27.95, 12.44)
CIE-LCH	lch(10.29, 30.59, 24.00°)
OKLab	oklab(23.75% 0.0814 0.0341)
OKLCH	oklch(23.75% 0.088 22.7)
XYZ	xyz(2.1429, 1.1637, 0.3702)
Luminance	0.0116 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0409 #043F3A

analogous

#3F0426 #3F0409 #3F1C04

triadic

#3F0409 #093F04 #04093F

tetradic

#3F0409 #263F04 #043F3A #1C043F

square

#3F0409 #263F04 #043F3A #1C043F

split-complementary

#3F0409 #043F1C #04263F

monochromatic

#1D0204 #1D0204 #3F0409 #790811 #B20B19

Accessibility & contrast

On white

17.04

#3F0409 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#3F0409 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0409

17.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0409	#FFFFFF	#000000	##FFFFFF
##3F0409	1.00	17.04	1.23	17.04
#FFFFFF	17.04	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161409

Deuteranopia (green-blind)

#252107

Tritanopia (blue-blind)

#460006

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #3f0409;
/* rgb */ color: rgb(63, 4, 9);
/* oklch */ color: oklch(23.7% 0.088 22.7);

Tailwind

colors: {
  custom: {
    50: '#794b4a',
    500: '#3f0409',
    950: '#000000',
  },
}

SCSS

$custom: #3f0409;
$custom-light: #794b4a;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0409",
  "rgb": {
    "r": 63,
    "g": 4,
    "b": 9
  },
  "hsl": {
    "h": 354.915,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.23749,
    "c": 0.08829,
    "h": 22.7
  },
  "luminance": 0.01163
}

Semantic roles & 50–950 ramp

primary

#3F0409

secondary

#1E8078

accent

#FEEC2A

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #3F0409

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

Preview Lab → · Contrast checker → · Palette generator →