#A33F33#A33F33

#A33F33 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.3% C 0.135 H 29.5°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#A33F33
RGB	rgb(163, 63, 51)
HSL	hsl(6, 52%, 42%)
HSV	hsv(6, 69%, 64%)
CMYK	cmyk(0%, 61.3%, 68.7%, 36.1%)
CIE-LAB	lab(40.55, 40.62, 28.62)
CIE-LCH	lch(40.55, 49.69, 35.17°)
OKLab	oklab(50.3% 0.1176 0.0665)
OKLCH	oklch(50.3% 0.135 29.5)
XYZ	xyz(17.4810, 11.5829, 4.4465)
Luminance	0.1158 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33F33 #3397A3

analogous

#A3335F #A33F33 #A37733

triadic

#A33F33 #33A33F #3F33A3

tetradic

#A33F33 #5FA333 #3397A3 #7733A3

square

#A33F33 #5FA333 #3397A3 #7733A3

split-complementary

#A33F33 #33A377 #335FA3

monochromatic

#461B16 #742D24 #A33F33 #C7594C #D6857B

Accessibility & contrast

On white

6.33

#A33F33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#A33F33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33F33

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33F33	#FFFFFF	#000000	##FFFFFF
##A33F33	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5231

Deuteranopia (green-blind)

#726830

Tritanopia (blue-blind)

#B3293D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a33f33;
/* rgb */ color: rgb(163, 63, 51);
/* oklch */ color: oklch(50.3% 0.135 29.5);

Tailwind

colors: {
  custom: {
    50: '#c5786b',
    500: '#a33f33',
    950: '#000000',
  },
}

SCSS

$custom: #a33f33;
$custom-light: #c5786b;
$custom-dark: #000000;

JSON

{
  "hex": "#a33f33",
  "rgb": {
    "r": 163,
    "g": 63,
    "b": 51
  },
  "hsl": {
    "h": 6.429,
    "s": 52.336,
    "l": 41.961
  },
  "oklch": {
    "l": 0.50296,
    "c": 0.13512,
    "h": 29.5
  },
  "luminance": 0.11581
}

Semantic roles & 50–950 ramp

primary

#A33F33

secondary

#73B6BE

accent

#CCDC4C

background

#FCF7F6

surface

#F9EDEB

border

#D2C8C6

text

#140906

muted

#827B7A

Preview Lab

Preview with #A33F33

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

Preview Lab → · Contrast checker → · Palette generator →