#3A0309#3A0309

#3A0309 is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.5% C 0.084 H 21.0°. Best body text is #FFFFFF at 17.55:1 contrast (WCAG AA passes).

Color values

HEX	#3A0309
RGB	rgb(58, 3, 9)
HSL	hsl(353, 90%, 12%)
HSV	hsv(353, 95%, 23%)
CMYK	cmyk(0%, 94.8%, 84.5%, 77.3%)
CIE-LAB	lab(8.86, 26.77, 10.24)
CIE-LCH	lch(8.86, 28.66, 20.94°)
OKLab	oklab(22.48% 0.0785 0.0302)
OKLCH	oklch(22.48% 0.084 21)
XYZ	xyz(1.8270, 0.9847, 0.3523)
Luminance	0.0098 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A0309 #033A34

analogous

#3A0325 #3A0309 #3A1903

triadic

#3A0309 #093A03 #03093A

tetradic

#3A0309 #253A03 #033A34 #19033A

square

#3A0309 #253A03 #033A34 #19033A

split-complementary

#3A0309 #033A19 #03253A

monochromatic

#1D0205 #1D0205 #3A0309 #740612 #AE091B

Accessibility & contrast

On white

17.55

#3A0309 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#3A0309 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A0309

17.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A0309	#FFFFFF	#000000	##FFFFFF
##3A0309	1.00	17.55	1.20	17.55
#FFFFFF	17.55	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141209

Deuteranopia (green-blind)

#221D07

Tritanopia (blue-blind)

#410005

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #3a0309;
/* rgb */ color: rgb(58, 3, 9);
/* oklch */ color: oklch(22.5% 0.084 21.0);

Tailwind

colors: {
  custom: {
    50: '#75494a',
    500: '#3a0309',
    950: '#000000',
  },
}

SCSS

$custom: #3a0309;
$custom-light: #75494a;
$custom-dark: #000000;

JSON

{
  "hex": "#3a0309",
  "rgb": {
    "r": 58,
    "g": 3,
    "b": 9
  },
  "hsl": {
    "h": 353.455,
    "s": 90.164,
    "l": 11.961
  },
  "oklch": {
    "l": 0.22479,
    "c": 0.08411,
    "h": 21
  },
  "luminance": 0.00984
}

Semantic roles & 50–950 ramp

primary

#3A0309

secondary

#1C7D72

accent

#FFE829

background

#F7F4F4

surface

#EDE7E7

border

#C8C3C3

text

#090101

muted

#7B7777

Preview Lab

Preview with #3A0309

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

Preview Lab → · Contrast checker → · Palette generator →