#3F090D#3F090D

#3F090D is a very dark, moderate red. Relative luminance 0.013; OKLCH L 24.4% C 0.082 H 22.1°. Best body text is #FFFFFF at 16.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F090D
RGB	rgb(63, 9, 13)
HSL	hsl(356, 75%, 14%)
HSV	hsv(356, 86%, 25%)
CMYK	cmyk(0%, 85.7%, 79.4%, 75.3%)
CIE-LAB	lab(11.15, 25.93, 11.91)
CIE-LCH	lch(11.15, 28.53, 24.66°)
OKLab	oklab(24.41% 0.0761 0.0309)
OKLCH	oklch(24.41% 0.082 22.1)
XYZ	xyz(2.2205, 1.2815, 0.5111)
Luminance	0.0128 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F090D #093F3B

analogous

#3F0928 #3F090D #3F2009

triadic

#3F090D #0D3F09 #090D3F

tetradic

#3F090D #283F09 #093F3B #20093F

square

#3F090D #283F09 #093F3B #20093F

split-complementary

#3F090D #093F20 #09283F

monochromatic

#1B0406 #1B0406 #3F090D #751118 #AA1823

Accessibility & contrast

On white

16.72

#3F090D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#3F090D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F090D

16.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F090D	#FFFFFF	#000000	##FFFFFF
##3F090D	1.00	16.72	1.26	16.72
#FFFFFF	16.72	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19160D

Deuteranopia (green-blind)

#26220B

Tritanopia (blue-blind)

#46000B

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #3f090d;
/* rgb */ color: rgb(63, 9, 13);
/* oklch */ color: oklch(24.4% 0.082 22.1);

Tailwind

colors: {
  custom: {
    50: '#794e4c',
    500: '#3f090d',
    950: '#000000',
  },
}

SCSS

$custom: #3f090d;
$custom-light: #794e4c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f090d",
  "rgb": {
    "r": 63,
    "g": 9,
    "b": 13
  },
  "hsl": {
    "h": 355.556,
    "s": 75,
    "l": 14.118
  },
  "oklch": {
    "l": 0.24407,
    "c": 0.08211,
    "h": 22.1
  },
  "luminance": 0.01281
}

Semantic roles & 50–950 ramp

primary

#3F090D

secondary

#277D77

accent

#F2E436

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#0A0201

muted

#7C7877

Preview Lab

Preview with #3F090D

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

Preview Lab → · Contrast checker → · Palette generator →