#A33730#A33730

#A33730 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.2% C 0.144 H 27.4°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#A33730
RGB	rgb(163, 55, 48)
HSL	hsl(4, 55%, 41%)
HSV	hsv(4, 71%, 64%)
CMYK	cmyk(0%, 66.3%, 70.6%, 36.1%)
CIE-LAB	lab(39.13, 44.12, 28.72)
CIE-LCH	lch(39.13, 52.64, 33.06°)
OKLab	oklab(49.22% 0.128 0.0662)
OKLCH	oklch(49.22% 0.144 27.4)
XYZ	xyz(17.0057, 10.7347, 3.9723)
Luminance	0.1073 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33730 #309CA3

analogous

#A33063 #A33730 #A37130

triadic

#A33730 #30A337 #3730A3

tetradic

#A33730 #63A330 #309CA3 #7130A3

square

#A33730 #63A330 #309CA3 #7130A3

split-complementary

#A33730 #30A371 #3063A3

monochromatic

#441714 #742722 #A33730 #C94F47 #D77C77

Accessibility & contrast

On white

6.67

#A33730 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#A33730 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33730

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33730	#FFFFFF	#000000	##FFFFFF
##A33730	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554D2E

Deuteranopia (green-blind)

#70652D

Tritanopia (blue-blind)

#B31B36

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a33730;
/* rgb */ color: rgb(163, 55, 48);
/* oklch */ color: oklch(49.2% 0.144 27.4);

Tailwind

colors: {
  custom: {
    50: '#c57468',
    500: '#a33730',
    950: '#000000',
  },
}

SCSS

$custom: #a33730;
$custom-light: #c57468;
$custom-dark: #000000;

JSON

{
  "hex": "#a33730",
  "rgb": {
    "r": 163,
    "g": 55,
    "b": 48
  },
  "hsl": {
    "h": 3.652,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.49217,
    "c": 0.14411,
    "h": 27.4
  },
  "luminance": 0.10732
}

Semantic roles & 50–950 ramp

primary

#A33730

secondary

#70BABF

accent

#D5DE4A

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140806

muted

#837B7A

Preview Lab

Preview with #A33730

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

Preview Lab → · Contrast checker → · Palette generator →