#340303#340303

#340303 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 21.0% C 0.078 H 27.4°. Best body text is #FFFFFF at 18.10:1 contrast (WCAG AA passes).

Color values

HEX	#340303
RGB	rgb(52, 3, 3)
HSL	hsl(0, 89%, 11%)
HSV	hsv(0, 94%, 20%)
CMYK	cmyk(0%, 94.2%, 94.2%, 79.6%)
CIE-LAB	lab(7.24, 24.25, 10.15)
CIE-LCH	lch(7.24, 26.29, 22.70°)
OKLab	oklab(20.96% 0.0695 0.036)
OKLCH	oklch(20.96% 0.078 27.4)
XYZ	xyz(1.4654, 0.8020, 0.1638)
Luminance	0.0080 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#340303 #033434

analogous

#34031B #340303 #341B03

triadic

#340303 #033403 #030334

tetradic

#340303 #1B3403 #033434 #1B0334

square

#340303 #1B3403 #033434 #1B0334

split-complementary

#340303 #03341B #031B34

monochromatic

#1D0202 #1D0202 #340303 #6E0606 #A80A0A

Accessibility & contrast

On white

18.10

#340303 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#340303 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #340303

18.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##340303	#FFFFFF	#000000	##FFFFFF
##340303	1.00	18.10	1.16	18.10
#FFFFFF	18.10	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#120F03

Deuteranopia (green-blind)

#1E1A02

Tritanopia (blue-blind)

#3A0004

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #340303;
/* rgb */ color: rgb(52, 3, 3);
/* oklch */ color: oklch(21.0% 0.078 27.4);

Tailwind

colors: {
  custom: {
    50: '#704848',
    500: '#340303',
    950: '#000000',
  },
}

SCSS

$custom: #340303;
$custom-light: #704848;
$custom-dark: #000000;

JSON

{
  "hex": "#340303",
  "rgb": {
    "r": 52,
    "g": 3,
    "b": 3
  },
  "hsl": {
    "h": 0,
    "s": 89.091,
    "l": 10.784
  },
  "oklch": {
    "l": 0.20959,
    "c": 0.0783,
    "h": 27.4
  },
  "luminance": 0.00802
}

Semantic roles & 50–950 ramp

primary

#340303

secondary

#1C7777

accent

#FFFF29

background

#F7F4F4

surface

#EDE6E6

border

#C8C2C2

text

#080100

muted

#7B7777

Preview Lab

Preview with #340303

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

Preview Lab → · Contrast checker → · Palette generator →