#A63521#A63521

#A63521 is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.3% C 0.152 H 32.4°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#A63521
RGB	rgb(166, 53, 33)
HSL	hsl(9, 67%, 39%)
HSV	hsv(9, 80%, 65%)
CMYK	cmyk(0%, 68.1%, 80.1%, 34.9%)
CIE-LAB	lab(39.18, 45.37, 37.50)
CIE-LCH	lch(39.18, 58.86, 39.57°)
OKLab	oklab(49.3% 0.1285 0.0815)
OKLCH	oklch(49.3% 0.152 32.4)
XYZ	xyz(17.2755, 10.7656, 2.6069)
Luminance	0.1076 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63521 #2192A6

analogous

#A6214F #A63521 #A67821

triadic

#A63521 #21A635 #3521A6

tetradic

#A63521 #4FA621 #2192A6 #7821A6

square

#A63521 #4FA621 #2192A6 #7821A6

split-complementary

#A63521 #21A678 #214FA6

monochromatic

#40140D #732517 #A63521 #D6482F #E07562

Accessibility & contrast

On white

6.66

#A63521 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#A63521 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63521

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63521	#FFFFFF	#000000	##FFFFFF
##A63521	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564C1E

Deuteranopia (green-blind)

#72651C

Tritanopia (blue-blind)

#B71131

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a63521;
/* rgb */ color: rgb(166, 53, 33);
/* oklch */ color: oklch(49.3% 0.152 32.4);

Tailwind

colors: {
  custom: {
    50: '#c9735e',
    500: '#a63521',
    950: '#000000',
  },
}

SCSS

$custom: #a63521;
$custom-light: #c9735e;
$custom-dark: #000000;

JSON

{
  "hex": "#a63521",
  "rgb": {
    "r": 166,
    "g": 53,
    "b": 33
  },
  "hsl": {
    "h": 9.023,
    "s": 66.834,
    "l": 39.02
  },
  "oklch": {
    "l": 0.49303,
    "c": 0.15216,
    "h": 32.4
  },
  "luminance": 0.10763
}

Semantic roles & 50–950 ramp

primary

#A63521

secondary

#5EB5C5

accent

#D0EA3E

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A63521

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

Preview Lab → · Contrast checker → · Palette generator →