#A42828#A42828

#A42828 is a mid, vivid red. Relative luminance 0.096; OKLCH L 47.7% C 0.161 H 25.8°. Best body text is #FFFFFF at 7.21:1 contrast (WCAG AA passes).

Color values

HEX	#A42828
RGB	rgb(164, 40, 40)
HSL	hsl(0, 61%, 40%)
HSV	hsv(0, 76%, 64%)
CMYK	cmyk(0%, 75.6%, 75.6%, 35.7%)
CIE-LAB	lab(37.05, 49.99, 31.15)
CIE-LCH	lch(37.05, 58.90, 31.93°)
OKLab	oklab(47.66% 0.1447 0.0698)
OKLCH	oklch(47.66% 0.161 25.8)
XYZ	xyz(16.4535, 9.5658, 2.9871)
Luminance	0.0956 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A42828 #28A4A4

analogous

#A42866 #A42828 #A46628

triadic

#A42828 #28A428 #2828A4

tetradic

#A42828 #66A428 #28A4A4 #6628A4

square

#A42828 #66A428 #28A4A4 #6628A4

split-complementary

#A42828 #28A466 #2866A4

monochromatic

#421010 #731C1C #A42828 #CF3A3A #DB6B6B

Accessibility & contrast

On white

7.21

#A42828 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#A42828 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A42828

7.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A42828	#FFFFFF	#000000	##FFFFFF
##A42828	1.00	7.21	2.91	7.21
#FFFFFF	7.21	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D4627

Deuteranopia (green-blind)

#6C6123

Tritanopia (blue-blind)

#B5002A

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a42828;
/* rgb */ color: rgb(164, 40, 40);
/* oklch */ color: oklch(47.7% 0.161 25.8);

Tailwind

colors: {
  custom: {
    50: '#c76c62',
    500: '#a42828',
    950: '#000000',
  },
}

SCSS

$custom: #a42828;
$custom-light: #c76c62;
$custom-dark: #000000;

JSON

{
  "hex": "#a42828",
  "rgb": {
    "r": 164,
    "g": 40,
    "b": 40
  },
  "hsl": {
    "h": 0,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.47664,
    "c": 0.16062,
    "h": 25.8
  },
  "luminance": 0.09563
}

Semantic roles & 50–950 ramp

primary

#A42828

secondary

#66C1C1

accent

#E4E444

background

#FDF6F5

surface

#FAECEA

border

#D3C7C6

text

#150705

muted

#837A79

Preview Lab

Preview with #A42828

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

Preview Lab → · Contrast checker → · Palette generator →