#3F0B18#3F0B18

#3F0B18 is a very dark, moderate red. Relative luminance 0.014; OKLCH L 24.9% C 0.080 H 10.6°. Best body text is #FFFFFF at 16.50:1 contrast (WCAG AA passes).

Color values

HEX	#3F0B18
RGB	rgb(63, 11, 24)
HSL	hsl(345, 70%, 15%)
HSV	hsv(345, 83%, 25%)
CMYK	cmyk(0%, 82.5%, 61.9%, 75.3%)
CIE-LAB	lab(11.71, 25.93, 5.83)
CIE-LCH	lch(11.71, 26.57, 12.67°)
OKLab	oklab(24.91% 0.0786 0.0147)
OKLCH	oklch(24.91% 0.08 10.6)
XYZ	xyz(2.3347, 1.3624, 1.0040)
Luminance	0.0136 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0B18 #0B3F32

analogous

#3F0B32 #3F0B18 #3F180B

triadic

#3F0B18 #183F0B #0B183F

tetradic

#3F0B18 #323F0B #0B3F32 #180B3F

square

#3F0B18 #323F0B #0B3F32 #180B3F

split-complementary

#3F0B18 #0B3F18 #0B323F

monochromatic

#1A050A #1A050A #3F0B18 #73142C #A71D40

Accessibility & contrast

On white

16.50

#3F0B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#3F0B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0B18

16.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0B18	#FFFFFF	#000000	##FFFFFF
##3F0B18	1.00	16.50	1.27	16.50
#FFFFFF	16.50	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181818

Deuteranopia (green-blind)

#262317

Tritanopia (blue-blind)

#460210

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #3f0b18;
/* rgb */ color: rgb(63, 11, 24);
/* oklch */ color: oklch(24.9% 0.080 10.6);

Tailwind

colors: {
  custom: {
    50: '#784f54',
    500: '#3f0b18',
    950: '#000000',
  },
}

SCSS

$custom: #3f0b18;
$custom-light: #784f54;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0b18",
  "rgb": {
    "r": 63,
    "g": 11,
    "b": 24
  },
  "hsl": {
    "h": 345,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.24905,
    "c": 0.07994,
    "h": 10.6
  },
  "luminance": 0.01362
}

Semantic roles & 50–950 ramp

primary

#3F0B18

secondary

#2A7C67

accent

#EDC03B

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#090202

muted

#7B7878

Preview Lab

Preview with #3F0B18

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

Preview Lab → · Contrast checker → · Palette generator →