#3A0303#3A0303

#3A0303 is a very dark, moderate red. Relative luminance 0.010; OKLCH L 22.4% C 0.085 H 27.7°. Best body text is #FFFFFF at 17.58:1 contrast (WCAG AA passes).

Color values

HEX	#3A0303
RGB	rgb(58, 3, 3)
HSL	hsl(0, 90%, 12%)
HSV	hsv(0, 95%, 23%)
CMYK	cmyk(0%, 94.8%, 94.8%, 77.3%)
CIE-LAB	lab(8.75, 26.44, 12.53)
CIE-LCH	lch(8.75, 29.26, 25.35°)
OKLab	oklab(22.36% 0.0753 0.0395)
OKLCH	oklch(22.36% 0.085 27.7)
XYZ	xyz(1.7942, 0.9715, 0.1792)
Luminance	0.0097 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A0303 #033A3A

analogous

#3A031F #3A0303 #3A1F03

triadic

#3A0303 #033A03 #03033A

tetradic

#3A0303 #1F3A03 #033A3A #1F033A

square

#3A0303 #1F3A03 #033A3A #1F033A

split-complementary

#3A0303 #033A1F #031F3A

monochromatic

#1D0202 #1D0202 #3A0303 #740606 #AE0909

Accessibility & contrast

On white

17.58

#3A0303 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#3A0303 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A0303

17.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A0303	#FFFFFF	#000000	##FFFFFF
##3A0303	1.00	17.58	1.19	17.58
#FFFFFF	17.58	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141102

Deuteranopia (green-blind)

#221D01

Tritanopia (blue-blind)

#410004

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #3a0303;
/* rgb */ color: rgb(58, 3, 3);
/* oklch */ color: oklch(22.4% 0.085 27.7);

Tailwind

colors: {
  custom: {
    50: '#754948',
    500: '#3a0303',
    950: '#000000',
  },
}

SCSS

$custom: #3a0303;
$custom-light: #754948;
$custom-dark: #000000;

JSON

{
  "hex": "#3a0303",
  "rgb": {
    "r": 58,
    "g": 3,
    "b": 3
  },
  "hsl": {
    "h": 0,
    "s": 90.164,
    "l": 11.961
  },
  "oklch": {
    "l": 0.22361,
    "c": 0.08499,
    "h": 27.7
  },
  "luminance": 0.00971
}

Semantic roles & 50–950 ramp

primary

#3A0303

secondary

#1C7D7D

accent

#FFFF29

background

#F7F4F4

surface

#EEE7E6

border

#C9C3C2

text

#090100

muted

#7B7777

Preview Lab

Preview with #3A0303

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

Preview Lab → · Contrast checker → · Palette generator →