#A33F28#A33F28

#A33F28 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.1% C 0.138 H 34.4°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#A33F28
RGB	rgb(163, 63, 40)
HSL	hsl(11, 61%, 40%)
HSV	hsv(11, 75%, 64%)
CMYK	cmyk(0%, 61.3%, 75.5%, 36.1%)
CIE-LAB	lab(40.41, 40.05, 34.79)
CIE-LCH	lch(40.41, 53.05, 40.98°)
OKLab	oklab(50.15% 0.1137 0.0778)
OKLCH	oklch(50.15% 0.138 34.4)
XYZ	xyz(17.2666, 11.4971, 3.3170)
Luminance	0.1149 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33F28 #288CA3

analogous

#A3284E #A33F28 #A37D28

triadic

#A33F28 #28A33F #3F28A3

tetradic

#A33F28 #4EA328 #288CA3 #7D28A3

square

#A33F28 #4EA328 #288CA3 #7D28A3

split-complementary

#A33F28 #28A37D #284EA3

monochromatic

#411910 #722C1C #A33F28 #CF553A #DB806B

Accessibility & contrast

On white

6.37

#A33F28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#A33F28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33F28

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33F28	#FFFFFF	#000000	##FFFFFF
##A33F28	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5125

Deuteranopia (green-blind)

#736725

Tritanopia (blue-blind)

#B3273A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a33f28;
/* rgb */ color: rgb(163, 63, 40);
/* oklch */ color: oklch(50.1% 0.138 34.4);

Tailwind

colors: {
  custom: {
    50: '#c57863',
    500: '#a33f28',
    950: '#000000',
  },
}

SCSS

$custom: #a33f28;
$custom-light: #c57863;
$custom-dark: #000000;

JSON

{
  "hex": "#a33f28",
  "rgb": {
    "r": 163,
    "g": 63,
    "b": 40
  },
  "hsl": {
    "h": 11.22,
    "s": 60.591,
    "l": 39.804
  },
  "oklch": {
    "l": 0.50145,
    "c": 0.13772,
    "h": 34.4
  },
  "luminance": 0.11495
}

Semantic roles & 50–950 ramp

primary

#A33F28

secondary

#66B0C1

accent

#C6E444

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#140905

muted

#837B79

Preview Lab

Preview with #A33F28

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

Preview Lab → · Contrast checker → · Palette generator →