#3F050B#3F050B

#3F050B is a very dark, moderate red. Relative luminance 0.012; OKLCH L 23.9% C 0.087 H 21.5°. Best body text is #FFFFFF at 16.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F050B
RGB	rgb(63, 5, 11)
HSL	hsl(354, 85%, 13%)
HSV	hsv(354, 92%, 25%)
CMYK	cmyk(0%, 92.1%, 82.5%, 75.3%)
CIE-LAB	lab(10.48, 27.58, 11.89)
CIE-LCH	lch(10.48, 30.04, 23.32°)
OKLab	oklab(23.9% 0.0808 0.0319)
OKLCH	oklch(23.9% 0.087 21.5)
XYZ	xyz(2.1648, 1.1898, 0.4322)
Luminance	0.0119 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F050B #053F39

analogous

#3F0528 #3F050B #3F1C05

triadic

#3F050B #0B3F05 #050B3F

tetradic

#3F050B #283F05 #053F39 #1C053F

square

#3F050B #283F05 #053F39 #1C053F

split-complementary

#3F050B #053F1C #05283F

monochromatic

#1C0205 #1C0205 #3F050B #780915 #B00E1F

Accessibility & contrast

On white

16.97

#3F050B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#3F050B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F050B

16.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F050B	#FFFFFF	#000000	##FFFFFF
##3F050B	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)

#17140B

Deuteranopia (green-blind)

#252109

Tritanopia (blue-blind)

#460008

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #3f050b;
/* rgb */ color: rgb(63, 5, 11);
/* oklch */ color: oklch(23.9% 0.087 21.5);

Tailwind

colors: {
  custom: {
    50: '#794c4b',
    500: '#3f050b',
    950: '#000000',
  },
}

SCSS

$custom: #3f050b;
$custom-light: #794c4b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f050b",
  "rgb": {
    "r": 63,
    "g": 5,
    "b": 11
  },
  "hsl": {
    "h": 353.793,
    "s": 85.294,
    "l": 13.333
  },
  "oklch": {
    "l": 0.23904,
    "c": 0.08691,
    "h": 21.5
  },
  "luminance": 0.01189
}

Semantic roles & 50–950 ramp

primary

#3F050B

secondary

#208076

accent

#FCE62C

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0101

muted

#7C7777

Preview Lab

Preview with #3F050B

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

Preview Lab → · Contrast checker → · Palette generator →