#3F0903#3F0903

#3F0903 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.2% C 0.084 H 31.7°. Best body text is #FFFFFF at 16.78:1 contrast (WCAG AA passes).

Color values

HEX	#3F0903
RGB	rgb(63, 9, 3)
HSL	hsl(6, 91%, 13%)
HSV	hsv(6, 95%, 25%)
CMYK	cmyk(0%, 85.7%, 95.2%, 75.3%)
CIE-LAB	lab(10.99, 25.40, 15.86)
CIE-LCH	lch(10.99, 29.95, 31.99°)
OKLab	oklab(24.24% 0.0714 0.0442)
OKLCH	oklch(24.24% 0.084 31.7)
XYZ	xyz(2.1643, 1.2591, 0.2152)
Luminance	0.0126 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0903 #03393F

analogous

#3F031B #3F0903 #3F2703

triadic

#3F0903 #033F09 #09033F

tetradic

#3F0903 #1B3F03 #03393F #27033F

square

#3F0903 #1B3F03 #03393F #27033F

split-complementary

#3F0903 #033F27 #031B3F

monochromatic

#1D0401 #1D0401 #3F0903 #791106 #B41A09

Accessibility & contrast

On white

16.78

#3F0903 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#3F0903 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0903

16.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0903	#FFFFFF	#000000	##FFFFFF
##3F0903	1.00	16.78	1.25	16.78
#FFFFFF	16.78	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A1602

Deuteranopia (green-blind)

#272201

Tritanopia (blue-blind)

#460008

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #3f0903;
/* rgb */ color: rgb(63, 9, 3);
/* oklch */ color: oklch(24.2% 0.084 31.7);

Tailwind

colors: {
  custom: {
    50: '#794d48',
    500: '#3f0903',
    950: '#000000',
  },
}

SCSS

$custom: #3f0903;
$custom-light: #794d48;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0903",
  "rgb": {
    "r": 63,
    "g": 9,
    "b": 3
  },
  "hsl": {
    "h": 6,
    "s": 90.909,
    "l": 12.941
  },
  "oklch": {
    "l": 0.24238,
    "c": 0.08396,
    "h": 31.7
  },
  "luminance": 0.01259
}

Semantic roles & 50–950 ramp

primary

#3F0903

secondary

#1D7781

accent

#EAFF29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0100

muted

#7C7777

Preview Lab

Preview with #3F0903

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

Preview Lab → · Contrast checker → · Palette generator →