#A33F21#A33F21

#A33F21 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.1% C 0.139 H 37.0°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#A33F21
RGB	rgb(163, 63, 33)
HSL	hsl(14, 66%, 38%)
HSV	hsv(14, 80%, 64%)
CMYK	cmyk(0%, 61.3%, 79.8%, 36.1%)
CIE-LAB	lab(40.33, 39.76, 38.48)
CIE-LCH	lch(40.33, 55.33, 44.06°)
OKLab	oklab(50.07% 0.1115 0.0839)
OKLCH	oklch(50.07% 0.139 37)
XYZ	xyz(17.1581, 11.4537, 2.7458)
Luminance	0.1145 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33F21 #2185A3

analogous

#A32144 #A33F21 #A38021

triadic

#A33F21 #21A33F #3F21A3

tetradic

#A33F21 #44A321 #2185A3 #8021A3

square

#A33F21 #44A321 #2185A3 #8021A3

split-complementary

#A33F21 #21A380 #2144A3

monochromatic

#3D180C #702B17 #A33F21 #D4532D #DF7D60

Accessibility & contrast

On white

6.38

#A33F21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#A33F21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33F21

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33F21	#FFFFFF	#000000	##FFFFFF
##A33F21	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B511D

Deuteranopia (green-blind)

#74671D

Tritanopia (blue-blind)

#B32639

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a33f21;
/* rgb */ color: rgb(163, 63, 33);
/* oklch */ color: oklch(50.1% 0.139 37.0);

Tailwind

colors: {
  custom: {
    50: '#c6785e',
    500: '#a33f21',
    950: '#000000',
  },
}

SCSS

$custom: #a33f21;
$custom-light: #c6785e;
$custom-dark: #000000;

JSON

{
  "hex": "#a33f21",
  "rgb": {
    "r": 163,
    "g": 63,
    "b": 33
  },
  "hsl": {
    "h": 13.846,
    "s": 66.327,
    "l": 38.431
  },
  "oklch": {
    "l": 0.50069,
    "c": 0.13948,
    "h": 37
  },
  "luminance": 0.11451
}

Semantic roles & 50–950 ramp

primary

#A33F21

secondary

#5CACC3

accent

#C2E93F

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#140904

muted

#837B79

Preview Lab

Preview with #A33F21

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

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