#3F090C#3F090C

#3F090C is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.4% C 0.082 H 23.1°. Best body text is #FFFFFF at 16.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F090C
RGB	rgb(63, 9, 12)
HSL	hsl(357, 75%, 14%)
HSV	hsv(357, 86%, 25%)
CMYK	cmyk(0%, 85.7%, 81%, 75.3%)
CIE-LAB	lab(11.13, 25.87, 12.35)
CIE-LCH	lch(11.13, 28.67, 25.52°)
OKLab	oklab(24.39% 0.0756 0.0322)
OKLCH	oklch(24.39% 0.082 23.1)
XYZ	xyz(2.2142, 1.2790, 0.4780)
Luminance	0.0128 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F090C #093F3C

analogous

#3F0927 #3F090C #3F2109

triadic

#3F090C #0C3F09 #090C3F

tetradic

#3F090C #273F09 #093F3C #21093F

square

#3F090C #273F09 #093F3C #21093F

split-complementary

#3F090C #093F21 #09273F

monochromatic

#1B0405 #1B0405 #3F090C #751116 #AA1820

Accessibility & contrast

On white

16.72

#3F090C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#3F090C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F090C

16.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F090C	#FFFFFF	#000000	##FFFFFF
##3F090C	1.00	16.72	1.26	16.72
#FFFFFF	16.72	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19160C

Deuteranopia (green-blind)

#26220A

Tritanopia (blue-blind)

#46000B

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3f090c;
/* rgb */ color: rgb(63, 9, 12);
/* oklch */ color: oklch(24.4% 0.082 23.1);

Tailwind

colors: {
  custom: {
    50: '#794e4c',
    500: '#3f090c',
    950: '#000000',
  },
}

SCSS

$custom: #3f090c;
$custom-light: #794e4c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f090c",
  "rgb": {
    "r": 63,
    "g": 9,
    "b": 12
  },
  "hsl": {
    "h": 356.667,
    "s": 75,
    "l": 14.118
  },
  "oklch": {
    "l": 0.24389,
    "c": 0.08221,
    "h": 23.1
  },
  "luminance": 0.01279
}

Semantic roles & 50–950 ramp

primary

#3F090C

secondary

#277D78

accent

#F2E736

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #3F090C

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

Preview Lab → · Contrast checker → · Palette generator →