#3F0B03#3F0B03

#3F0B03 is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.5% C 0.082 H 33.1°. Best body text is #FFFFFF at 16.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F0B03
RGB	rgb(63, 11, 3)
HSL	hsl(8, 91%, 13%)
HSV	hsv(8, 95%, 25%)
CMYK	cmyk(0%, 82.5%, 95.2%, 75.3%)
CIE-LAB	lab(11.30, 24.54, 16.29)
CIE-LCH	lch(11.30, 29.46, 33.58°)
OKLab	oklab(24.47% 0.0688 0.0448)
OKLCH	oklch(24.47% 0.082 33.1)
XYZ	xyz(2.1863, 1.3030, 0.2225)
Luminance	0.0130 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0B03 #03373F

analogous

#3F0319 #3F0B03 #3F2903

triadic

#3F0B03 #033F0B #0B033F

tetradic

#3F0B03 #193F03 #03373F #29033F

square

#3F0B03 #193F03 #03373F #29033F

split-complementary

#3F0B03 #033F29 #03193F

monochromatic

#1D0501 #1D0501 #3F0B03 #791506 #B41F09

Accessibility & contrast

On white

16.66

#3F0B03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#3F0B03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0B03

16.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0B03	#FFFFFF	#000000	##FFFFFF
##3F0B03	1.00	16.66	1.26	16.66
#FFFFFF	16.66	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1702

Deuteranopia (green-blind)

#282201

Tritanopia (blue-blind)

#460009

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3f0b03;
/* rgb */ color: rgb(63, 11, 3);
/* oklch */ color: oklch(24.5% 0.082 33.1);

Tailwind

colors: {
  custom: {
    50: '#794e48',
    500: '#3f0b03',
    950: '#000000',
  },
}

SCSS

$custom: #3f0b03;
$custom-light: #794e48;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0b03",
  "rgb": {
    "r": 63,
    "g": 11,
    "b": 3
  },
  "hsl": {
    "h": 8,
    "s": 90.909,
    "l": 12.941
  },
  "oklch": {
    "l": 0.2447,
    "c": 0.08204,
    "h": 33.1
  },
  "luminance": 0.01303
}

Semantic roles & 50–950 ramp

primary

#3F0B03

secondary

#1D7481

accent

#E2FF29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0200

muted

#7C7877

Preview Lab

Preview with #3F0B03

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

Preview Lab → · Contrast checker → · Palette generator →