#3F0505#3F0505

#3F0505 is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.8% C 0.088 H 27.1°. Best body text is #FFFFFF at 17.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F0505
RGB	rgb(63, 5, 5)
HSL	hsl(0, 85%, 13%)
HSV	hsv(0, 92%, 25%)
CMYK	cmyk(0%, 92.1%, 92.1%, 75.3%)
CIE-LAB	lab(10.38, 27.28, 14.21)
CIE-LCH	lch(10.38, 30.76, 27.51°)
OKLab	oklab(23.8% 0.078 0.04)
OKLCH	oklch(23.8% 0.088 27.1)
XYZ	xyz(2.1318, 1.1766, 0.2584)
Luminance	0.0118 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F0505 #053F3F

analogous

#3F0522 #3F0505 #3F2205

triadic

#3F0505 #053F05 #05053F

tetradic

#3F0505 #223F05 #053F3F #22053F

square

#3F0505 #223F05 #053F3F #22053F

split-complementary

#3F0505 #053F22 #05223F

monochromatic

#1C0202 #1C0202 #3F0505 #780909 #B00E0E

Accessibility & contrast

On white

17.00

#3F0505 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#3F0505 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F0505

17.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F0505	#FFFFFF	#000000	##FFFFFF
##3F0505	1.00	17.00	1.24	17.00
#FFFFFF	17.00	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	17.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181404

Deuteranopia (green-blind)

#262103

Tritanopia (blue-blind)

#460006

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #3f0505;
/* rgb */ color: rgb(63, 5, 5);
/* oklch */ color: oklch(23.8% 0.088 27.1);

Tailwind

colors: {
  custom: {
    50: '#7a4c49',
    500: '#3f0505',
    950: '#000000',
  },
}

SCSS

$custom: #3f0505;
$custom-light: #7a4c49;
$custom-dark: #000000;

JSON

{
  "hex": "#3f0505",
  "rgb": {
    "r": 63,
    "g": 5,
    "b": 5
  },
  "hsl": {
    "h": 0,
    "s": 85.294,
    "l": 13.333
  },
  "oklch": {
    "l": 0.238,
    "c": 0.08768,
    "h": 27.1
  },
  "luminance": 0.01176
}

Semantic roles & 50–950 ramp

primary

#3F0505

secondary

#208080

accent

#FCFC2C

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#0A0100

muted

#7C7777

Preview Lab

Preview with #3F0505

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

Preview Lab → · Contrast checker → · Palette generator →