#3B0404#3B0404

#3B0404 is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.7% C 0.085 H 27.3°. Best body text is #FFFFFF at 17.43:1 contrast (WCAG AA passes).

Color values

HEX	#3B0404
RGB	rgb(59, 4, 4)
HSL	hsl(0, 87%, 12%)
HSV	hsv(0, 93%, 23%)
CMYK	cmyk(0%, 93.2%, 93.2%, 76.9%)
CIE-LAB	lab(9.20, 26.32, 12.80)
CIE-LCH	lch(9.20, 29.27, 25.93°)
OKLab	oklab(22.75% 0.0752 0.0388)
OKLCH	oklch(22.75% 0.085 27.3)
XYZ	xyz(1.8692, 1.0257, 0.2144)
Luminance	0.0103 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B0404 #043B3B

analogous

#3B0420 #3B0404 #3B2004

triadic

#3B0404 #043B04 #04043B

tetradic

#3B0404 #203B04 #043B3B #20043B

square

#3B0404 #203B04 #043B3B #20043B

split-complementary

#3B0404 #043B20 #04203B

monochromatic

#1D0202 #1D0202 #3B0404 #740808 #AE0C0C

Accessibility & contrast

On white

17.43

#3B0404 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#3B0404 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B0404

17.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B0404	#FFFFFF	#000000	##FFFFFF
##3B0404	1.00	17.43	1.21	17.43
#FFFFFF	17.43	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151203

Deuteranopia (green-blind)

#231E02

Tritanopia (blue-blind)

#420005

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #3b0404;
/* rgb */ color: rgb(59, 4, 4);
/* oklch */ color: oklch(22.7% 0.085 27.3);

Tailwind

colors: {
  custom: {
    50: '#764a48',
    500: '#3b0404',
    950: '#000000',
  },
}

SCSS

$custom: #3b0404;
$custom-light: #764a48;
$custom-dark: #000000;

JSON

{
  "hex": "#3b0404",
  "rgb": {
    "r": 59,
    "g": 4,
    "b": 4
  },
  "hsl": {
    "h": 0,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.22746,
    "c": 0.0846,
    "h": 27.3
  },
  "luminance": 0.01025
}

Semantic roles & 50–950 ramp

primary

#3B0404

secondary

#1E7D7D

accent

#FDFD2A

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#090100

muted

#7B7777

Preview Lab

Preview with #3B0404

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

Preview Lab → · Contrast checker → · Palette generator →