#3F100C#3F100C

#3F100C is a dark, moderate red. Relative luminance 0.015; OKLCH L 25.3% C 0.074 H 28.3°. Best body text is #FFFFFF at 16.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F100C
RGB	rgb(63, 16, 12)
HSL	hsl(5, 68%, 15%)
HSV	hsv(5, 81%, 25%)
CMYK	cmyk(0%, 74.6%, 81%, 75.3%)
CIE-LAB	lab(12.31, 22.62, 13.98)
CIE-LCH	lch(12.31, 26.59, 31.71°)
OKLab	oklab(25.28% 0.0654 0.0353)
OKLCH	oklch(25.28% 0.074 28.3)
XYZ	xyz(2.3018, 1.4542, 0.5072)
Luminance	0.0145 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F100C #0C3B3F

analogous

#3F0C22 #3F100C #3F2A0C

triadic

#3F100C #0C3F10 #100C3F

tetradic

#3F100C #223F0C #0C3B3F #2A0C3F

square

#3F100C #223F0C #0C3B3F #2A0C3F

split-complementary

#3F100C #0C3F2A #0C223F

monochromatic

#1A0705 #1A0705 #3F100C #721D16 #A62A20

Accessibility & contrast

On white

16.27

#3F100C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#3F100C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F100C

16.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F100C	#FFFFFF	#000000	##FFFFFF
##3F100C	1.00	16.27	1.29	16.27
#FFFFFF	16.27	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D1A0B

Deuteranopia (green-blind)

#29240B

Tritanopia (blue-blind)

#46050F

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #3f100c;
/* rgb */ color: rgb(63, 16, 12);
/* oklch */ color: oklch(25.3% 0.074 28.3);

Tailwind

colors: {
  custom: {
    50: '#79514c',
    500: '#3f100c',
    950: '#000000',
  },
}

SCSS

$custom: #3f100c;
$custom-light: #79514c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f100c",
  "rgb": {
    "r": 63,
    "g": 16,
    "b": 12
  },
  "hsl": {
    "h": 4.706,
    "s": 68,
    "l": 14.706
  },
  "oklch": {
    "l": 0.25275,
    "c": 0.07426,
    "h": 28.3
  },
  "luminance": 0.01454
}

Semantic roles & 50–950 ramp

primary

#3F100C

secondary

#2C757B

accent

#DDEB3D

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #3F100C

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

Preview Lab → · Contrast checker → · Palette generator →