#A33D28#A33D28

#A33D28 is a mid, vivid red. Relative luminance 0.113; OKLCH L 49.9% C 0.140 H 33.4°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#A33D28
RGB	rgb(163, 61, 40)
HSL	hsl(10, 61%, 40%)
HSV	hsv(10, 75%, 64%)
CMYK	cmyk(0%, 62.6%, 75.5%, 36.1%)
CIE-LAB	lab(40.05, 41.00, 34.40)
CIE-LCH	lch(40.05, 53.52, 40.00°)
OKLab	oklab(49.88% 0.1166 0.0769)
OKLCH	oklch(49.88% 0.14 33.4)
XYZ	xyz(17.1578, 11.2796, 3.2808)
Luminance	0.1128 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33D28 #288EA3

analogous

#A32851 #A33D28 #A37B28

triadic

#A33D28 #28A33D #3D28A3

tetradic

#A33D28 #51A328 #288EA3 #7B28A3

square

#A33D28 #51A328 #288EA3 #7B28A3

split-complementary

#A33D28 #28A37B #2851A3

monochromatic

#411810 #722B1C #A33D28 #CF533A #DB7E6B

Accessibility & contrast

On white

6.45

#A33D28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#A33D28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33D28

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33D28	#FFFFFF	#000000	##FFFFFF
##A33D28	1.00	6.45	3.26	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595025

Deuteranopia (green-blind)

#736725

Tritanopia (blue-blind)

#B32439

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a33d28;
/* rgb */ color: rgb(163, 61, 40);
/* oklch */ color: oklch(49.9% 0.140 33.4);

Tailwind

colors: {
  custom: {
    50: '#c67763',
    500: '#a33d28',
    950: '#000000',
  },
}

SCSS

$custom: #a33d28;
$custom-light: #c67763;
$custom-dark: #000000;

JSON

{
  "hex": "#a33d28",
  "rgb": {
    "r": 163,
    "g": 61,
    "b": 40
  },
  "hsl": {
    "h": 10.244,
    "s": 60.591,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49875,
    "c": 0.13969,
    "h": 33.4
  },
  "luminance": 0.11277
}

Semantic roles & 50–950 ramp

primary

#A33D28

secondary

#66B1C1

accent

#C8E444

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#140905

muted

#837B79

Preview Lab

Preview with #A33D28

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

Preview Lab → · Contrast checker → · Palette generator →