#A33D31#A33D31

#A33D31 is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.0% C 0.138 H 29.5°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#A33D31
RGB	rgb(163, 61, 49)
HSL	hsl(6, 54%, 42%)
HSV	hsv(6, 70%, 64%)
CMYK	cmyk(0%, 62.6%, 69.9%, 36.1%)
CIE-LAB	lab(40.16, 41.45, 29.34)
CIE-LCH	lch(40.16, 50.78, 35.30°)
OKLab	oklab(50% 0.1198 0.0678)
OKLCH	oklch(50% 0.138 29.5)
XYZ	xyz(17.3291, 11.3481, 4.1830)
Luminance	0.1135 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33D31 #3197A3

analogous

#A3315E #A33D31 #A37631

triadic

#A33D31 #31A33D #3D31A3

tetradic

#A33D31 #5EA331 #3197A3 #7631A3

square

#A33D31 #5EA331 #3197A3 #7631A3

split-complementary

#A33D31 #31A376 #315EA3

monochromatic

#451A15 #742B23 #A33D31 #C85649 #D68278

Accessibility & contrast

On white

6.42

#A33D31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#A33D31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33D31

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33D31	#FFFFFF	#000000	##FFFFFF
##A33D31	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58512F

Deuteranopia (green-blind)

#72672E

Tritanopia (blue-blind)

#B3263B

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a33d31;
/* rgb */ color: rgb(163, 61, 49);
/* oklch */ color: oklch(50.0% 0.138 29.5);

Tailwind

colors: {
  custom: {
    50: '#c57769',
    500: '#a33d31',
    950: '#000000',
  },
}

SCSS

$custom: #a33d31;
$custom-light: #c57769;
$custom-dark: #000000;

JSON

{
  "hex": "#a33d31",
  "rgb": {
    "r": 163,
    "g": 61,
    "b": 49
  },
  "hsl": {
    "h": 6.316,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.49997,
    "c": 0.13766,
    "h": 29.5
  },
  "luminance": 0.11346
}

Semantic roles & 50–950 ramp

primary

#A33D31

secondary

#71B7BF

accent

#CEDD4B

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A33D31

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

Preview Lab → · Contrast checker → · Palette generator →