#3F0A15#3F0A15

#3F0A15 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.7% C 0.081 H 13.8°. Best body text is #FFFFFF at 16.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F0A15
RGB	rgb(63, 10, 21)
HSL	hsl(348, 73%, 14%)
HSV	hsv(348, 84%, 25%)
CMYK	cmyk(0%, 84.1%, 66.7%, 75.3%)
CIE-LAB	lab(11.47, 26.08, 7.69)
CIE-LCH	lch(11.47, 27.19, 16.44°)
OKLab	oklab(24.71% 0.0785 0.0192)
OKLCH	oklch(24.71% 0.081 13.8)
XYZ	xyz(2.2940, 1.3283, 0.8449)
Luminance	0.0133 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0A15 #0A3F34

analogous

#3F0A30 #3F0A15 #3F1A0A

triadic

#3F0A15 #153F0A #0A153F

tetradic

#3F0A15 #303F0A #0A3F34 #1A0A3F

square

#3F0A15 #303F0A #0A3F34 #1A0A3F

split-complementary

#3F0A15 #0A3F1A #0A303F

monochromatic

#1A0409 #1A0409 #3F0A15 #741227 #A91B38

Accessibility & contrast

On white

16.59

#3F0A15 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#3F0A15 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0A15

16.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0A15	#FFFFFF	#000000	##FFFFFF
##3F0A15	1.00	16.59	1.27	16.59
#FFFFFF	16.59	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181715

Deuteranopia (green-blind)

#262214

Tritanopia (blue-blind)

#46000F

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3f0a15;
/* rgb */ color: rgb(63, 10, 21);
/* oklch */ color: oklch(24.7% 0.081 13.8);

Tailwind

colors: {
  custom: {
    50: '#784e52',
    500: '#3f0a15',
    950: '#000000',
  },
}

SCSS

$custom: #3f0a15;
$custom-light: #784e52;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0a15",
  "rgb": {
    "r": 63,
    "g": 10,
    "b": 21
  },
  "hsl": {
    "h": 347.547,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.24706,
    "c": 0.08083,
    "h": 13.8
  },
  "luminance": 0.01328
}

Semantic roles & 50–950 ramp

primary

#3F0A15

secondary

#297C6B

accent

#EFC938

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#090202

muted

#7B7878

Preview Lab

Preview with #3F0A15

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

Preview Lab → · Contrast checker → · Palette generator →