#A21D1F#A21D1F

#A21D1F is a mid, vivid red. Relative luminance 0.087; OKLCH L 46.3% C 0.168 H 26.3°. Best body text is #FFFFFF at 7.69:1 contrast (WCAG AA passes).

Color values

HEX	#A21D1F
RGB	rgb(162, 29, 31)
HSL	hsl(359, 70%, 37%)
HSV	hsv(359, 82%, 64%)
CMYK	cmyk(0%, 82.1%, 80.9%, 36.5%)
CIE-LAB	lab(35.32, 52.47, 34.46)
CIE-LCH	lch(35.32, 62.77, 33.29°)
OKLab	oklab(46.28% 0.1508 0.0745)
OKLCH	oklch(46.28% 0.168 26.3)
XYZ	xyz(15.5889, 8.6616, 2.1471)
Luminance	0.0866 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A21D1F #1DA2A0

analogous

#A21D61 #A21D1F #A25E1D

triadic

#A21D1F #1FA21D #1D1FA2

tetradic

#A21D1F #61A21D #1DA2A0 #5E1DA2

square

#A21D1F #61A21D #1DA2A0 #5E1DA2

split-complementary

#A21D1F #1DA25E #1D61A2

monochromatic

#3A0A0B #6E1415 #A21D1F #D62629 #E1585A

Accessibility & contrast

On white

7.69

#A21D1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#A21D1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A21D1F

7.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A21D1F	#FFFFFF	#000000	##FFFFFF
##A21D1F	1.00	7.69	2.73	7.69
#FFFFFF	7.69	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48411D

Deuteranopia (green-blind)

#695D19

Tritanopia (blue-blind)

#B30020

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #a21d1f;
/* rgb */ color: rgb(162, 29, 31);
/* oklch */ color: oklch(46.3% 0.168 26.3);

Tailwind

colors: {
  custom: {
    50: '#c7675b',
    500: '#a21d1f',
    950: '#000000',
  },
}

SCSS

$custom: #a21d1f;
$custom-light: #c7675b;
$custom-dark: #000000;

JSON

{
  "hex": "#a21d1f",
  "rgb": {
    "r": 162,
    "g": 29,
    "b": 31
  },
  "hsl": {
    "h": 359.098,
    "s": 69.634,
    "l": 37.451
  },
  "oklch": {
    "l": 0.46275,
    "c": 0.16818,
    "h": 26.3
  },
  "luminance": 0.08659
}

Semantic roles & 50–950 ramp

primary

#A21D1F

secondary

#56C5C3

accent

#ECEA3B

background

#FDF6F5

surface

#FAEBE9

border

#D3C6C5

text

#150704

muted

#837A79

Preview Lab

Preview with #A21D1F

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

Preview Lab → · Contrast checker → · Palette generator →