#A33E2B#A33E2B

#A33E2B is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.0% C 0.138 H 32.6°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#A33E2B
RGB	rgb(163, 62, 43)
HSL	hsl(10, 58%, 40%)
HSV	hsv(10, 74%, 64%)
CMYK	cmyk(0%, 62%, 73.6%, 36.1%)
CIE-LAB	lab(40.26, 40.67, 32.94)
CIE-LCH	lch(40.26, 52.33, 39.01°)
OKLab	oklab(50.05% 0.1162 0.0744)
OKLCH	oklch(50.05% 0.138 32.6)
XYZ	xyz(17.2647, 11.4086, 3.5780)
Luminance	0.1141 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33E2B #2B90A3

analogous

#A32B54 #A33E2B #A37A2B

triadic

#A33E2B #2BA33E #3E2BA3

tetradic

#A33E2B #54A32B #2B90A3 #7A2BA3

square

#A33E2B #54A32B #2B90A3 #7A2BA3

split-complementary

#A33E2B #2BA37A #2B54A3

monochromatic

#421911 #732C1E #A33E2B #CC553F #D9806F

Accessibility & contrast

On white

6.40

#A33E2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#A33E2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33E2B

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33E2B	#FFFFFF	#000000	##FFFFFF
##A33E2B	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5128

Deuteranopia (green-blind)

#736728

Tritanopia (blue-blind)

#B3263A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a33e2b;
/* rgb */ color: rgb(163, 62, 43);
/* oklch */ color: oklch(50.0% 0.138 32.6);

Tailwind

colors: {
  custom: {
    50: '#c57765',
    500: '#a33e2b',
    950: '#000000',
  },
}

SCSS

$custom: #a33e2b;
$custom-light: #c57765;
$custom-dark: #000000;

JSON

{
  "hex": "#a33e2b",
  "rgb": {
    "r": 163,
    "g": 62,
    "b": 43
  },
  "hsl": {
    "h": 9.5,
    "s": 58.252,
    "l": 40.392
  },
  "oklch": {
    "l": 0.50047,
    "c": 0.13798,
    "h": 32.6
  },
  "luminance": 0.11406
}

Semantic roles & 50–950 ramp

primary

#A33E2B

secondary

#6AB2C0

accent

#C9E146

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140905

muted

#837B7A

Preview Lab

Preview with #A33E2B

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

Preview Lab → · Contrast checker → · Palette generator →