#330303#330303

#330303 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 20.7% C 0.077 H 27.3°. Best body text is #FFFFFF at 18.18:1 contrast (WCAG AA passes).

Color values

HEX	#330303
RGB	rgb(51, 3, 3)
HSL	hsl(0, 89%, 11%)
HSV	hsv(0, 94%, 20%)
CMYK	cmyk(0%, 94.1%, 94.1%, 80%)
CIE-LAB	lab(7.01, 23.82, 9.77)
CIE-LCH	lch(7.01, 25.74, 22.31°)
OKLab	oklab(20.72% 0.0686 0.0354)
OKLCH	oklch(20.72% 0.077 27.3)
XYZ	xyz(1.4144, 0.7757, 0.1614)
Luminance	0.0078 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#330303 #033333

analogous

#33031B #330303 #331B03

triadic

#330303 #033303 #030333

tetradic

#330303 #1B3303 #033333 #1B0333

square

#330303 #1B3303 #033333 #1B0333

split-complementary

#330303 #03331B #031B33

monochromatic

#1D0202 #1D0202 #330303 #6D0606 #A70A0A

Accessibility & contrast

On white

18.18

#330303 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#330303 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #330303

18.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##330303	#FFFFFF	#000000	##FFFFFF
##330303	1.00	18.18	1.16	18.18
#FFFFFF	18.18	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#110F03

Deuteranopia (green-blind)

#1E1902

Tritanopia (blue-blind)

#390004

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #330303;
/* rgb */ color: rgb(51, 3, 3);
/* oklch */ color: oklch(20.7% 0.077 27.3);

Tailwind

colors: {
  custom: {
    50: '#6f4848',
    500: '#330303',
    950: '#000000',
  },
}

SCSS

$custom: #330303;
$custom-light: #6f4848;
$custom-dark: #000000;

JSON

{
  "hex": "#330303",
  "rgb": {
    "r": 51,
    "g": 3,
    "b": 3
  },
  "hsl": {
    "h": 0,
    "s": 88.889,
    "l": 10.588
  },
  "oklch": {
    "l": 0.20724,
    "c": 0.07716,
    "h": 27.3
  },
  "luminance": 0.00776
}

Semantic roles & 50–950 ramp

primary

#330303

secondary

#1C7676

accent

#FFFF29

background

#F7F4F4

surface

#EDE6E6

border

#C8C2C2

text

#080000

muted

#7B7777

Preview Lab

Preview with #330303

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

Preview Lab → · Contrast checker → · Palette generator →