#A42831#A42831

#A42831 is a mid, vivid red. Relative luminance 0.096; OKLCH L 47.8% C 0.160 H 22.0°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#A42831
RGB	rgb(164, 40, 49)
HSL	hsl(356, 61%, 40%)
HSV	hsv(356, 76%, 64%)
CMYK	cmyk(0%, 75.6%, 70.1%, 35.7%)
CIE-LAB	lab(37.18, 50.41, 25.82)
CIE-LCH	lch(37.18, 56.64, 27.12°)
OKLab	oklab(47.8% 0.148 0.0599)
OKLCH	oklch(47.8% 0.16 22)
XYZ	xyz(16.6249, 9.6344, 3.8894)
Luminance	0.0963 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A42831 #28A49B

analogous

#A4286F #A42831 #A45D28

triadic

#A42831 #31A428 #2831A4

tetradic

#A42831 #6FA428 #28A49B #5D28A4

square

#A42831 #6FA428 #28A49B #5D28A4

split-complementary

#A42831 #28A45D #286FA4

monochromatic

#421014 #731C22 #A42831 #CF3A45 #DB6B74

Accessibility & contrast

On white

7.18

#A42831 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#A42831 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A42831

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A42831	#FFFFFF	#000000	##FFFFFF
##A42831	1.00	7.18	2.93	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C4730

Deuteranopia (green-blind)

#6B612D

Tritanopia (blue-blind)

#B4002D

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a42831;
/* rgb */ color: rgb(164, 40, 49);
/* oklch */ color: oklch(47.8% 0.160 22.0);

Tailwind

colors: {
  custom: {
    50: '#c76c69',
    500: '#a42831',
    950: '#000000',
  },
}

SCSS

$custom: #a42831;
$custom-light: #c76c69;
$custom-dark: #000000;

JSON

{
  "hex": "#a42831",
  "rgb": {
    "r": 164,
    "g": 40,
    "b": 49
  },
  "hsl": {
    "h": 355.645,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.47799,
    "c": 0.15968,
    "h": 22
  },
  "luminance": 0.09632
}

Semantic roles & 50–950 ramp

primary

#A42831

secondary

#66C1BB

accent

#E4D844

background

#FDF6F6

surface

#FAECEB

border

#D3C7C6

text

#140806

muted

#837B7A

Preview Lab

Preview with #A42831

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

Preview Lab → · Contrast checker → · Palette generator →