#A63538#A63538

#A63538 is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.6% C 0.148 H 22.9°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#A63538
RGB	rgb(166, 53, 56)
HSL	hsl(358, 52%, 43%)
HSV	hsv(358, 68%, 65%)
CMYK	cmyk(0%, 68.1%, 66.3%, 34.9%)
CIE-LAB	lab(39.48, 46.46, 24.42)
CIE-LCH	lch(39.48, 52.49, 27.73°)
OKLab	oklab(49.62% 0.1367 0.0578)
OKLCH	oklch(49.62% 0.148 22.9)
XYZ	xyz(17.7146, 10.9412, 4.9197)
Luminance	0.1094 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63538 #35A6A3

analogous

#A63570 #A63538 #A66A35

triadic

#A63538 #38A635 #3538A6

tetradic

#A63538 #70A635 #35A6A3 #6A35A6

square

#A63538 #70A635 #35A6A3 #6A35A6

split-complementary

#A63538 #35A66A #3570A6

monochromatic

#491719 #782628 #A63538 #C75154 #D67F82

Accessibility & contrast

On white

6.59

#A63538 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#A63538 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63538

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63538	#FFFFFF	#000000	##FFFFFF
##A63538	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)

#534E37

Deuteranopia (green-blind)

#706635

Tritanopia (blue-blind)

#B61837

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #a63538;
/* rgb */ color: rgb(166, 53, 56);
/* oklch */ color: oklch(49.6% 0.148 22.9);

Tailwind

colors: {
  custom: {
    50: '#c7736e',
    500: '#a63538',
    950: '#000000',
  },
}

SCSS

$custom: #a63538;
$custom-light: #c7736e;
$custom-dark: #000000;

JSON

{
  "hex": "#a63538",
  "rgb": {
    "r": 166,
    "g": 53,
    "b": 56
  },
  "hsl": {
    "h": 358.407,
    "s": 51.598,
    "l": 42.941
  },
  "oklch": {
    "l": 0.49622,
    "c": 0.14839,
    "h": 22.9
  },
  "luminance": 0.10939
}

Semantic roles & 50–950 ramp

primary

#A63538

secondary

#77BFBD

accent

#DBD74D

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140807

muted

#837B7A

Preview Lab

Preview with #A63538

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

Preview Lab → · Contrast checker → · Palette generator →