#A33B23#A33B23

#A33B23 is a mid, vivid red. Relative luminance 0.110; OKLCH L 49.6% C 0.143 H 34.4°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#A33B23
RGB	rgb(163, 59, 35)
HSL	hsl(11, 65%, 39%)
HSV	hsv(11, 79%, 64%)
CMYK	cmyk(0%, 63.8%, 78.5%, 36.1%)
CIE-LAB	lab(39.64, 41.72, 36.72)
CIE-LCH	lch(39.64, 55.58, 41.35°)
OKLab	oklab(49.56% 0.1179 0.0806)
OKLCH	oklch(49.56% 0.143 34.4)
XYZ	xyz(16.9735, 11.0382, 2.8266)
Luminance	0.1104 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33B23 #238BA3

analogous

#A3234B #A33B23 #A37B23

triadic

#A33B23 #23A33B #3B23A3

tetradic

#A33B23 #4BA323 #238BA3 #7B23A3

square

#A33B23 #4BA323 #238BA3 #7B23A3

split-complementary

#A33B23 #23A37B #234BA3

monochromatic

#3E170D #712918 #A33B23 #D34F31 #DD7A63

Accessibility & contrast

On white

6.55

#A33B23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#A33B23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33B23

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33B23	#FFFFFF	#000000	##FFFFFF
##A33B23	1.00	6.55	3.21	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584F20

Deuteranopia (green-blind)

#72661F

Tritanopia (blue-blind)

#B32036

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a33b23;
/* rgb */ color: rgb(163, 59, 35);
/* oklch */ color: oklch(49.6% 0.143 34.4);

Tailwind

colors: {
  custom: {
    50: '#c6765f',
    500: '#a33b23',
    950: '#000000',
  },
}

SCSS

$custom: #a33b23;
$custom-light: #c6765f;
$custom-dark: #000000;

JSON

{
  "hex": "#a33b23",
  "rgb": {
    "r": 163,
    "g": 59,
    "b": 35
  },
  "hsl": {
    "h": 11.25,
    "s": 64.646,
    "l": 38.824
  },
  "oklch": {
    "l": 0.49555,
    "c": 0.14281,
    "h": 34.4
  },
  "luminance": 0.11036
}

Semantic roles & 50–950 ramp

primary

#A33B23

secondary

#5FB0C3

accent

#C8E840

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#140905

muted

#837B79

Preview Lab

Preview with #A33B23

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

Preview Lab → · Contrast checker → · Palette generator →