#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
RGBrgb(63, 10, 21)
HSLhsl(348, 73%, 14%)
HSVhsv(348, 84%, 25%)
CMYKcmyk(0%, 84.1%, 66.7%, 75.3%)
CIE-LABlab(11.47, 26.08, 7.69)
CIE-LCHlch(11.47, 27.19, 16.44°)
OKLaboklab(24.71% 0.0785 0.0192)
OKLCHoklch(24.71% 0.081 13.8)
XYZxyz(2.2940, 1.3283, 0.8449)
Luminance0.0133 (WCAG relative)
Temperaturewarm
Familyred

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
##3F0A151.0016.591.2716.59
#FFFFFF16.591.0021.001.00
#0000001.2721.001.0021.00
##FFFFFF16.591.0021.001.00

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 →

#3F0A15 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva