#3B0403#3B0403

#3B0403 is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.7% C 0.085 H 28.4°. Best body text is #FFFFFF at 17.43:1 contrast (WCAG AA passes).

Color values

HEX	#3B0403
RGB	rgb(59, 4, 3)
HSL	hsl(1, 90%, 12%)
HSV	hsv(1, 95%, 23%)
CMYK	cmyk(0%, 93.2%, 94.9%, 76.9%)
CIE-LAB	lab(9.19, 26.27, 13.18)
CIE-LCH	lch(9.19, 29.39, 26.65°)
OKLab	oklab(22.73% 0.0746 0.0404)
OKLCH	oklch(22.73% 0.085 28.4)
XYZ	xyz(1.8637, 1.0235, 0.1856)
Luminance	0.0102 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B0403 #033A3B

analogous

#3B031E #3B0403 #3B2003

triadic

#3B0403 #033B04 #04033B

tetradic

#3B0403 #1E3B03 #033A3B #20033B

square

#3B0403 #1E3B03 #033A3B #20033B

split-complementary

#3B0403 #033B20 #031E3B

monochromatic

#1D0201 #1D0201 #3B0403 #750806 #AF0C09

Accessibility & contrast

On white

17.43

#3B0403 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#3B0403 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B0403

17.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B0403	#FFFFFF	#000000	##FFFFFF
##3B0403	1.00	17.43	1.20	17.43
#FFFFFF	17.43	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151202

Deuteranopia (green-blind)

#231E01

Tritanopia (blue-blind)

#420004

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #3b0403;
/* rgb */ color: rgb(59, 4, 3);
/* oklch */ color: oklch(22.7% 0.085 28.4);

Tailwind

colors: {
  custom: {
    50: '#764a48',
    500: '#3b0403',
    950: '#000000',
  },
}

SCSS

$custom: #3b0403;
$custom-light: #764a48;
$custom-dark: #000000;

JSON

{
  "hex": "#3b0403",
  "rgb": {
    "r": 59,
    "g": 4,
    "b": 3
  },
  "hsl": {
    "h": 1.071,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.22727,
    "c": 0.08484,
    "h": 28.4
  },
  "luminance": 0.01023
}

Semantic roles & 50–950 ramp

primary

#3B0403

secondary

#1C7C7E

accent

#FBFF29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#090100

muted

#7B7777

Preview Lab

Preview with #3B0403

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

Preview Lab → · Contrast checker → · Palette generator →