#A33333#A33333

#A33333 is a mid, vivid red. Relative luminance 0.104; OKLCH L 48.8% C 0.148 H 24.4°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#A33333
RGB	rgb(163, 51, 51)
HSL	hsl(0, 52%, 42%)
HSV	hsv(0, 69%, 64%)
CMYK	cmyk(0%, 68.7%, 68.7%, 36.1%)
CIE-LAB	lab(38.54, 45.99, 26.20)
CIE-LCH	lch(38.54, 52.93, 29.67°)
OKLab	oklab(48.79% 0.1345 0.0612)
OKLCH	oklch(48.79% 0.148 24.4)
XYZ	xyz(16.8874, 10.3956, 4.2487)
Luminance	0.1039 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33333 #33A3A3

analogous

#A3336B #A33333 #A36B33

triadic

#A33333 #33A333 #3333A3

tetradic

#A33333 #6BA333 #33A3A3 #6B33A3

square

#A33333 #6BA333 #33A3A3 #6B33A3

split-complementary

#A33333 #33A36B #336BA3

monochromatic

#461616 #742424 #A33333 #C74C4C #D67B7B

Accessibility & contrast

On white

6.82

#A33333 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#A33333 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33333

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33333	#FFFFFF	#000000	##FFFFFF
##A33333	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524B32

Deuteranopia (green-blind)

#6E6430

Tritanopia (blue-blind)

#B31434

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a33333;
/* rgb */ color: rgb(163, 51, 51);
/* oklch */ color: oklch(48.8% 0.148 24.4);

Tailwind

colors: {
  custom: {
    50: '#c5726a',
    500: '#a33333',
    950: '#000000',
  },
}

SCSS

$custom: #a33333;
$custom-light: #c5726a;
$custom-dark: #000000;

JSON

{
  "hex": "#a33333",
  "rgb": {
    "r": 163,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 52.336,
    "l": 41.961
  },
  "oklch": {
    "l": 0.48792,
    "c": 0.14778,
    "h": 24.4
  },
  "luminance": 0.10393
}

Semantic roles & 50–950 ramp

primary

#A33333

secondary

#73BEBE

accent

#DCDC4C

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140806

muted

#837B7A

Preview Lab

Preview with #A33333

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

Preview Lab → · Contrast checker → · Palette generator →