#3F0504#3F0504

#3F0504 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.8% C 0.088 H 28.1°. Best body text is #FFFFFF at 17.01:1 contrast (WCAG AA passes).

Color values

HEX	#3F0504
RGB	rgb(63, 5, 4)
HSL	hsl(1, 88%, 13%)
HSV	hsv(1, 94%, 25%)
CMYK	cmyk(0%, 92.1%, 93.7%, 75.3%)
CIE-LAB	lab(10.37, 27.24, 14.59)
CIE-LCH	lch(10.37, 30.90, 28.18°)
OKLab	oklab(23.78% 0.0775 0.0414)
OKLCH	oklch(23.78% 0.088 28.1)
XYZ	xyz(2.1264, 1.1744, 0.2296)
Luminance	0.0117 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0504 #043E3F

analogous

#3F0420 #3F0504 #3F2204

triadic

#3F0504 #043F05 #05043F

tetradic

#3F0504 #203F04 #043E3F #22043F

square

#3F0504 #203F04 #043E3F #22043F

split-complementary

#3F0504 #043F22 #04203F

monochromatic

#1D0202 #1D0202 #3F0504 #790A08 #B20E0B

Accessibility & contrast

On white

17.01

#3F0504 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#3F0504 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0504

17.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0504	#FFFFFF	#000000	##FFFFFF
##3F0504	1.00	17.01	1.23	17.01
#FFFFFF	17.01	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181403

Deuteranopia (green-blind)

#262102

Tritanopia (blue-blind)

#460005

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #3f0504;
/* rgb */ color: rgb(63, 5, 4);
/* oklch */ color: oklch(23.8% 0.088 28.1);

Tailwind

colors: {
  custom: {
    50: '#7a4c48',
    500: '#3f0504',
    950: '#000000',
  },
}

SCSS

$custom: #3f0504;
$custom-light: #7a4c48;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0504",
  "rgb": {
    "r": 63,
    "g": 5,
    "b": 4
  },
  "hsl": {
    "h": 1.017,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.23782,
    "c": 0.0879,
    "h": 28.1
  },
  "luminance": 0.01174
}

Semantic roles & 50–950 ramp

primary

#3F0504

secondary

#1E7F80

accent

#FBFE2A

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0100

muted

#7C7777

Preview Lab

Preview with #3F0504

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

Preview Lab → · Contrast checker → · Palette generator →