#A42728#A42728

#A42728 is a mid, vivid red. Relative luminance 0.095; OKLCH L 47.6% C 0.161 H 25.5°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#A42728
RGB	rgb(164, 39, 40)
HSL	hsl(360, 62%, 40%)
HSV	hsv(360, 76%, 64%)
CMYK	cmyk(0%, 76.2%, 75.6%, 35.7%)
CIE-LAB	lab(36.93, 50.33, 31.01)
CIE-LCH	lch(36.93, 59.12, 31.64°)
OKLab	oklab(47.57% 0.1458 0.0695)
OKLCH	oklch(47.57% 0.161 25.5)
XYZ	xyz(16.4203, 9.4993, 2.9760)
Luminance	0.0950 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A42728 #27A4A3

analogous

#A42767 #A42728 #A46527

triadic

#A42728 #28A427 #2728A4

tetradic

#A42728 #67A427 #27A4A3 #6527A4

square

#A42728 #67A427 #27A4A3 #6527A4

split-complementary

#A42728 #27A465 #2767A4

monochromatic

#410F10 #731B1C #A42728 #D0383A #DC6A6B

Accessibility & contrast

On white

7.24

#A42728 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#A42728 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A42728

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A42728	#FFFFFF	#000000	##FFFFFF
##A42728	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D4627

Deuteranopia (green-blind)

#6C6123

Tritanopia (blue-blind)

#B50029

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a42728;
/* rgb */ color: rgb(164, 39, 40);
/* oklch */ color: oklch(47.6% 0.161 25.5);

Tailwind

colors: {
  custom: {
    50: '#c76c62',
    500: '#a42728',
    950: '#000000',
  },
}

SCSS

$custom: #a42728;
$custom-light: #c76c62;
$custom-dark: #000000;

JSON

{
  "hex": "#a42728",
  "rgb": {
    "r": 164,
    "g": 39,
    "b": 40
  },
  "hsl": {
    "h": 359.52,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.47572,
    "c": 0.16147,
    "h": 25.5
  },
  "luminance": 0.09497
}

Semantic roles & 50–950 ramp

primary

#A42728

secondary

#65C2C1

accent

#E5E343

background

#FDF6F5

surface

#FAECEA

border

#D3C7C6

text

#150705

muted

#837A79

Preview Lab

Preview with #A42728

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

Preview Lab → · Contrast checker → · Palette generator →