#3F100A#3F100A

#3F100A is a dark, moderate red. Relative luminance 0.014; OKLCH L 25.2% C 0.075 H 30.3°. Best body text is #FFFFFF at 16.28:1 contrast (WCAG AA passes).

Color values

HEX	#3F100A
RGB	rgb(63, 16, 10)
HSL	hsl(7, 73%, 14%)
HSV	hsv(7, 84%, 25%)
CMYK	cmyk(0%, 74.6%, 84.1%, 75.3%)
CIE-LAB	lab(12.28, 22.50, 14.80)
CIE-LCH	lch(12.28, 26.93, 33.33°)
OKLab	oklab(25.24% 0.0645 0.0377)
OKLCH	oklch(25.24% 0.075 30.3)
XYZ	xyz(2.2902, 1.4496, 0.4463)
Luminance	0.0145 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F100A #0A393F

analogous

#3F0A1F #3F100A #3F2B0A

triadic

#3F100A #0A3F10 #100A3F

tetradic

#3F100A #1F3F0A #0A393F #2B0A3F

square

#3F100A #1F3F0A #0A393F #2B0A3F

split-complementary

#3F100A #0A3F2B #0A1F3F

monochromatic

#1A0704 #1A0704 #3F100A #741D12 #A92B1B

Accessibility & contrast

On white

16.28

#3F100A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#3F100A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F100A

16.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F100A	#FFFFFF	#000000	##FFFFFF
##3F100A	1.00	16.28	1.29	16.28
#FFFFFF	16.28	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D1A09

Deuteranopia (green-blind)

#292408

Tritanopia (blue-blind)

#46050F

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #3f100a;
/* rgb */ color: rgb(63, 16, 10);
/* oklch */ color: oklch(25.2% 0.075 30.3);

Tailwind

colors: {
  custom: {
    50: '#79514b',
    500: '#3f100a',
    950: '#000000',
  },
}

SCSS

$custom: #3f100a;
$custom-light: #79514b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f100a",
  "rgb": {
    "r": 63,
    "g": 16,
    "b": 10
  },
  "hsl": {
    "h": 6.792,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.25243,
    "c": 0.07472,
    "h": 30.3
  },
  "luminance": 0.01449
}

Semantic roles & 50–950 ramp

primary

#3F100A

secondary

#29737C

accent

#DBEF38

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #3F100A

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

Preview Lab → · Contrast checker → · Palette generator →