#3F050A#3F050A

#3F050A is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.9% C 0.087 H 22.4°. Best body text is #FFFFFF at 16.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F050A
RGB	rgb(63, 5, 10)
HSL	hsl(355, 85%, 13%)
HSV	hsv(355, 92%, 25%)
CMYK	cmyk(0%, 92.1%, 84.1%, 75.3%)
CIE-LAB	lab(10.47, 27.53, 12.29)
CIE-LCH	lch(10.47, 30.15, 24.05°)
OKLab	oklab(23.89% 0.0804 0.0332)
OKLCH	oklch(23.89% 0.087 22.4)
XYZ	xyz(2.1592, 1.1876, 0.4026)
Luminance	0.0119 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F050A #053F3A

analogous

#3F0527 #3F050A #3F1D05

triadic

#3F050A #0A3F05 #050A3F

tetradic

#3F050A #273F05 #053F3A #1D053F

square

#3F050A #273F05 #053F3A #1D053F

split-complementary

#3F050A #053F1D #05273F

monochromatic

#1C0204 #1C0204 #3F050A #780913 #B00E1C

Accessibility & contrast

On white

16.97

#3F050A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#3F050A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F050A

16.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F050A	#FFFFFF	#000000	##FFFFFF
##3F050A	1.00	16.97	1.24	16.97
#FFFFFF	16.97	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17140A

Deuteranopia (green-blind)

#252108

Tritanopia (blue-blind)

#460007

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #3f050a;
/* rgb */ color: rgb(63, 5, 10);
/* oklch */ color: oklch(23.9% 0.087 22.4);

Tailwind

colors: {
  custom: {
    50: '#794c4b',
    500: '#3f050a',
    950: '#000000',
  },
}

SCSS

$custom: #3f050a;
$custom-light: #794c4b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f050a",
  "rgb": {
    "r": 63,
    "g": 5,
    "b": 10
  },
  "hsl": {
    "h": 354.828,
    "s": 85.294,
    "l": 13.333
  },
  "oklch": {
    "l": 0.23886,
    "c": 0.08699,
    "h": 22.4
  },
  "luminance": 0.01187
}

Semantic roles & 50–950 ramp

primary

#3F050A

secondary

#208077

accent

#FCEA2C

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #3F050A

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

Preview Lab → · Contrast checker → · Palette generator →