#A63720#A63720

#A63720 is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.5% C 0.150 H 33.5°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#A63720
RGB	rgb(166, 55, 32)
HSL	hsl(10, 68%, 39%)
HSV	hsv(10, 81%, 65%)
CMYK	cmyk(0%, 66.9%, 80.7%, 34.9%)
CIE-LAB	lab(39.49, 44.48, 38.34)
CIE-LCH	lch(39.49, 58.72, 40.76°)
OKLab	oklab(49.53% 0.1255 0.083)
OKLCH	oklch(49.53% 0.15 33.5)
XYZ	xyz(17.3548, 10.9462, 2.5652)
Luminance	0.1094 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63720 #208FA6

analogous

#A6204C #A63720 #A67A20

triadic

#A63720 #20A637 #3720A6

tetradic

#A63720 #4CA620 #208FA6 #7A20A6

square

#A63720 #4CA620 #208FA6 #7A20A6

split-complementary

#A63720 #20A67A #204CA6

monochromatic

#3F150C #732616 #A63720 #D64A2D #E07660

Accessibility & contrast

On white

6.59

#A63720 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#A63720 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63720

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63720	#FFFFFF	#000000	##FFFFFF
##A63720	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574D1C

Deuteranopia (green-blind)

#72661B

Tritanopia (blue-blind)

#B71633

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a63720;
/* rgb */ color: rgb(166, 55, 32);
/* oklch */ color: oklch(49.5% 0.150 33.5);

Tailwind

colors: {
  custom: {
    50: '#c9745d',
    500: '#a63720',
    950: '#000000',
  },
}

SCSS

$custom: #a63720;
$custom-light: #c9745d;
$custom-dark: #000000;

JSON

{
  "hex": "#a63720",
  "rgb": {
    "r": 166,
    "g": 55,
    "b": 32
  },
  "hsl": {
    "h": 10.299,
    "s": 67.677,
    "l": 38.824
  },
  "oklch": {
    "l": 0.4953,
    "c": 0.15049,
    "h": 33.5
  },
  "luminance": 0.10944
}

Semantic roles & 50–950 ramp

primary

#A63720

secondary

#5DB3C5

accent

#CDEB3D

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A63720

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

Preview Lab → · Contrast checker → · Palette generator →