#230309#230309

#230309 is a very dark, muted red. Relative luminance 0.004; OKLCH L 17.1% C 0.057 H 11.8°. Best body text is #FFFFFF at 19.29:1 contrast (WCAG AA passes).

Color values

HEX	#230309
RGB	rgb(35, 3, 9)
HSL	hsl(349, 84%, 7%)
HSV	hsv(349, 91%, 14%)
CMYK	cmyk(0%, 91.4%, 74.3%, 86.3%)
CIE-LAB	lab(4.00, 14.53, 2.56)
CIE-LCH	lch(4.00, 14.75, 9.98°)
OKLab	oklab(17.15% 0.0561 0.0117)
OKLCH	oklch(17.15% 0.057 11.8)
XYZ	xyz(0.7751, 0.4423, 0.3029)
Luminance	0.0044 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#230309 #03231D

analogous

#230319 #230309 #230D03

triadic

#230309 #092303 #030923

tetradic

#230309 #192303 #03231D #0D0323

square

#230309 #192303 #03231D #0D0323

split-complementary

#230309 #03230D #031923

monochromatic

#1C0207 #1C0207 #230309 #5B0817 #940D26

Accessibility & contrast

On white

19.29

#230309 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#230309 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #230309

19.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##230309	#FFFFFF	#000000	##FFFFFF
##230309	1.00	19.29	1.09	19.29
#FFFFFF	19.29	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A0A09

Deuteranopia (green-blind)

#131108

Tritanopia (blue-blind)

#270005

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #230309;
/* rgb */ color: rgb(35, 3, 9);
/* oklch */ color: oklch(17.1% 0.057 11.8);

Tailwind

colors: {
  custom: {
    50: '#5e474b',
    500: '#230309',
    950: '#000000',
  },
}

SCSS

$custom: #230309;
$custom-light: #5e474b;
$custom-dark: #000000;

JSON

{
  "hex": "#230309",
  "rgb": {
    "r": 35,
    "g": 3,
    "b": 9
  },
  "hsl": {
    "h": 348.75,
    "s": 84.211,
    "l": 7.451
  },
  "oklch": {
    "l": 0.17146,
    "c": 0.05733,
    "h": 11.8
  },
  "luminance": 0.00442
}

Semantic roles & 50–950 ramp

primary

#230309

secondary

#1B6759

accent

#FAD42D

background

#F5F4F4

surface

#E9E6E7

border

#C5C2C3

text

#040001

muted

#797777

Preview Lab

Preview with #230309

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

Preview Lab → · Contrast checker → · Palette generator →