#A33728#A33728

#A33728 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.1% C 0.146 H 30.8°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#A33728
RGB	rgb(163, 55, 40)
HSL	hsl(7, 61%, 40%)
HSV	hsv(7, 75%, 64%)
CMYK	cmyk(0%, 66.3%, 75.5%, 36.1%)
CIE-LAB	lab(39.03, 43.73, 33.28)
CIE-LCH	lch(39.03, 54.95, 37.28°)
OKLab	oklab(49.11% 0.1251 0.0745)
OKLCH	oklch(49.11% 0.146 30.8)
XYZ	xyz(16.8553, 10.6745, 3.1799)
Luminance	0.1067 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33728 #2894A3

analogous

#A32857 #A33728 #A37528

triadic

#A33728 #28A337 #3728A3

tetradic

#A33728 #57A328 #2894A3 #7528A3

square

#A33728 #57A328 #2894A3 #7528A3

split-complementary

#A33728 #28A375 #2857A3

monochromatic

#411610 #72261C #A33728 #CF4C3A #DB786B

Accessibility & contrast

On white

6.70

#A33728 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#A33728 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33728

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33728	#FFFFFF	#000000	##FFFFFF
##A33728	1.00	6.70	3.13	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554D26

Deuteranopia (green-blind)

#706524

Tritanopia (blue-blind)

#B31934

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a33728;
/* rgb */ color: rgb(163, 55, 40);
/* oklch */ color: oklch(49.1% 0.146 30.8);

Tailwind

colors: {
  custom: {
    50: '#c67363',
    500: '#a33728',
    950: '#000000',
  },
}

SCSS

$custom: #a33728;
$custom-light: #c67363;
$custom-dark: #000000;

JSON

{
  "hex": "#a33728",
  "rgb": {
    "r": 163,
    "g": 55,
    "b": 40
  },
  "hsl": {
    "h": 7.317,
    "s": 60.591,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49107,
    "c": 0.14561,
    "h": 30.8
  },
  "luminance": 0.10672
}

Semantic roles & 50–950 ramp

primary

#A33728

secondary

#66B6C1

accent

#D0E444

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#140805

muted

#837B79

Preview Lab

Preview with #A33728

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

Preview Lab → · Contrast checker → · Palette generator →