#3F0909#3F0909

#3F0909 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.3% C 0.083 H 25.9°. Best body text is #FFFFFF at 16.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F0909
RGB	rgb(63, 9, 9)
HSL	hsl(0, 75%, 14%)
HSV	hsv(0, 86%, 25%)
CMYK	cmyk(0%, 85.7%, 85.7%, 75.3%)
CIE-LAB	lab(11.08, 25.71, 13.55)
CIE-LCH	lch(11.08, 29.06, 27.79°)
OKLab	oklab(24.34% 0.0743 0.036)
OKLCH	oklch(24.34% 0.083 25.9)
XYZ	xyz(2.1972, 1.2722, 0.3883)
Luminance	0.0127 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0909 #093F3F

analogous

#3F0924 #3F0909 #3F2409

triadic

#3F0909 #093F09 #09093F

tetradic

#3F0909 #243F09 #093F3F #24093F

square

#3F0909 #243F09 #093F3F #24093F

split-complementary

#3F0909 #093F24 #09243F

monochromatic

#1B0404 #1B0404 #3F0909 #751111 #AA1818

Accessibility & contrast

On white

16.74

#3F0909 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#3F0909 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0909

16.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0909	#FFFFFF	#000000	##FFFFFF
##3F0909	1.00	16.74	1.25	16.74
#FFFFFF	16.74	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#191608

Deuteranopia (green-blind)

#272207

Tritanopia (blue-blind)

#46000A

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3f0909;
/* rgb */ color: rgb(63, 9, 9);
/* oklch */ color: oklch(24.3% 0.083 25.9);

Tailwind

colors: {
  custom: {
    50: '#794e4a',
    500: '#3f0909',
    950: '#000000',
  },
}

SCSS

$custom: #3f0909;
$custom-light: #794e4a;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0909",
  "rgb": {
    "r": 63,
    "g": 9,
    "b": 9
  },
  "hsl": {
    "h": 0,
    "s": 75,
    "l": 14.118
  },
  "oklch": {
    "l": 0.24337,
    "c": 0.08261,
    "h": 25.9
  },
  "luminance": 0.01272
}

Semantic roles & 50–950 ramp

primary

#3F0909

secondary

#277D7D

accent

#F2F236

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #3F0909

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

Preview Lab → · Contrast checker → · Palette generator →