#3B0309#3B0309

#3B0309 is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.7% C 0.085 H 21.3°. Best body text is #FFFFFF at 17.46:1 contrast (WCAG AA passes).

Color values

HEX	#3B0309
RGB	rgb(59, 3, 9)
HSL	hsl(354, 90%, 12%)
HSV	hsv(354, 95%, 23%)
CMYK	cmyk(0%, 94.9%, 84.7%, 76.9%)
CIE-LAB	lab(9.12, 27.10, 10.64)
CIE-LCH	lch(9.12, 29.11, 21.43°)
OKLab	oklab(22.71% 0.0794 0.0309)
OKLCH	oklch(22.71% 0.085 21.3)
XYZ	xyz(1.8857, 1.0150, 0.3550)
Luminance	0.0101 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B0309 #033B35

analogous

#3B0325 #3B0309 #3B1903

triadic

#3B0309 #093B03 #03093B

tetradic

#3B0309 #253B03 #033B35 #19033B

square

#3B0309 #253B03 #033B35 #19033B

split-complementary

#3B0309 #033B19 #03253B

monochromatic

#1D0104 #1D0104 #3B0309 #750612 #AF091B

Accessibility & contrast

On white

17.46

#3B0309 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#3B0309 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B0309

17.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B0309	#FFFFFF	#000000	##FFFFFF
##3B0309	1.00	17.46	1.20	17.46
#FFFFFF	17.46	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141209

Deuteranopia (green-blind)

#221E07

Tritanopia (blue-blind)

#420005

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #3b0309;
/* rgb */ color: rgb(59, 3, 9);
/* oklch */ color: oklch(22.7% 0.085 21.3);

Tailwind

colors: {
  custom: {
    50: '#764a4a',
    500: '#3b0309',
    950: '#000000',
  },
}

SCSS

$custom: #3b0309;
$custom-light: #764a4a;
$custom-dark: #000000;

JSON

{
  "hex": "#3b0309",
  "rgb": {
    "r": 59,
    "g": 3,
    "b": 9
  },
  "hsl": {
    "h": 353.571,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.22709,
    "c": 0.0852,
    "h": 21.3
  },
  "luminance": 0.01015
}

Semantic roles & 50–950 ramp

primary

#3B0309

secondary

#1C7E73

accent

#FFE829

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#090101

muted

#7B7777

Preview Lab

Preview with #3B0309

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

Preview Lab → · Contrast checker → · Palette generator →