#A42837#A42837

#A42837 is a mid, vivid red. Relative luminance 0.097; OKLCH L 47.9% C 0.159 H 19.3°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#A42837
RGB	rgb(164, 40, 55)
HSL	hsl(353, 61%, 40%)
HSV	hsv(353, 76%, 64%)
CMYK	cmyk(0%, 75.6%, 66.5%, 35.7%)
CIE-LAB	lab(37.28, 50.74, 22.19)
CIE-LCH	lch(37.28, 55.38, 23.63°)
OKLab	oklab(47.9% 0.1504 0.0527)
OKLCH	oklch(47.9% 0.159 19.3)
XYZ	xyz(16.7600, 9.6884, 4.6012)
Luminance	0.0969 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A42837 #28A495

analogous

#A42875 #A42837 #A45728

triadic

#A42837 #37A428 #2837A4

tetradic

#A42837 #75A428 #28A495 #5728A4

square

#A42837 #75A428 #28A495 #5728A4

split-complementary

#A42837 #28A457 #2875A4

monochromatic

#421016 #731C27 #A42837 #CF3A4C #DB6B79

Accessibility & contrast

On white

7.15

#A42837 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#A42837 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A42837

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A42837	#FFFFFF	#000000	##FFFFFF
##A42837	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4737

Deuteranopia (green-blind)

#6B6133

Tritanopia (blue-blind)

#B4002F

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #a42837;
/* rgb */ color: rgb(164, 40, 55);
/* oklch */ color: oklch(47.9% 0.159 19.3);

Tailwind

colors: {
  custom: {
    50: '#c66d6d',
    500: '#a42837',
    950: '#000000',
  },
}

SCSS

$custom: #a42837;
$custom-light: #c66d6d;
$custom-dark: #000000;

JSON

{
  "hex": "#a42837",
  "rgb": {
    "r": 164,
    "g": 40,
    "b": 55
  },
  "hsl": {
    "h": 352.742,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.47904,
    "c": 0.15932,
    "h": 19.3
  },
  "luminance": 0.09686
}

Semantic roles & 50–950 ramp

primary

#A42837

secondary

#66C1B6

accent

#E4D144

background

#FDF6F6

surface

#FAECEB

border

#D3C7C6

text

#140807

muted

#837B7A

Preview Lab

Preview with #A42837

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

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