#A33B33#A33B33

#A33B33 is a mid, vivid red. Relative luminance 0.112; OKLCH L 49.8% C 0.139 H 27.6°. Best body text is #FFFFFF at 6.50:1 contrast (WCAG AA passes).

Color values

HEX	#A33B33
RGB	rgb(163, 59, 51)
HSL	hsl(4, 52%, 42%)
HSV	hsv(4, 69%, 64%)
CMYK	cmyk(0%, 63.8%, 68.7%, 36.1%)
CIE-LAB	lab(39.84, 42.49, 27.77)
CIE-LCH	lch(39.84, 50.76, 33.17°)
OKLab	oklab(49.77% 0.1235 0.0646)
OKLCH	oklch(49.77% 0.139 27.6)
XYZ	xyz(17.2675, 11.1559, 4.3754)
Luminance	0.1115 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33B33 #339BA3

analogous

#A33363 #A33B33 #A37333

triadic

#A33B33 #33A33B #3B33A3

tetradic

#A33B33 #63A333 #339BA3 #7333A3

square

#A33B33 #63A333 #339BA3 #7333A3

split-complementary

#A33B33 #33A373 #3363A3

monochromatic

#461916 #742A24 #A33B33 #C7554C #D6817B

Accessibility & contrast

On white

6.50

#A33B33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#A33B33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33B33

6.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33B33	#FFFFFF	#000000	##FFFFFF
##A33B33	1.00	6.50	3.23	6.50
#FFFFFF	6.50	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575031

Deuteranopia (green-blind)

#716630

Tritanopia (blue-blind)

#B3233A

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a33b33;
/* rgb */ color: rgb(163, 59, 51);
/* oklch */ color: oklch(49.8% 0.139 27.6);

Tailwind

colors: {
  custom: {
    50: '#c5766b',
    500: '#a33b33',
    950: '#000000',
  },
}

SCSS

$custom: #a33b33;
$custom-light: #c5766b;
$custom-dark: #000000;

JSON

{
  "hex": "#a33b33",
  "rgb": {
    "r": 163,
    "g": 59,
    "b": 51
  },
  "hsl": {
    "h": 4.286,
    "s": 52.336,
    "l": 41.961
  },
  "oklch": {
    "l": 0.49766,
    "c": 0.13938,
    "h": 27.6
  },
  "luminance": 0.11153
}

Semantic roles & 50–950 ramp

primary

#A33B33

secondary

#73B9BE

accent

#D1DC4C

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A33B33

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

Preview Lab → · Contrast checker → · Palette generator →