#A81E1F#A81E1F

#A81E1F is a mid, vivid red. Relative luminance 0.094; OKLCH L 47.5% C 0.173 H 26.7°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#A81E1F
RGB	rgb(168, 30, 31)
HSL	hsl(360, 70%, 39%)
HSV	hsv(360, 82%, 66%)
CMYK	cmyk(0%, 82.1%, 81.5%, 34.1%)
CIE-LAB	lab(36.66, 53.97, 36.20)
CIE-LCH	lch(36.66, 64.99, 33.85°)
OKLab	oklab(47.48% 0.1548 0.0778)
OKLCH	oklch(47.48% 0.173 26.7)
XYZ	xyz(16.8621, 9.3551, 2.2139)
Luminance	0.0935 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A81E1F #1EA8A7

analogous

#A81E64 #A81E1F #A8621E

triadic

#A81E1F #1FA81E #1E1FA8

tetradic

#A81E1F #64A81E #1EA8A7 #621EA8

square

#A81E1F #64A81E #1EA8A7 #621EA8

split-complementary

#A81E1F #1EA862 #1E64A8

monochromatic

#400B0C #741515 #A81E1F #D92A2B #E25E5F

Accessibility & contrast

On white

7.32

#A81E1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#A81E1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A81E1F

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A81E1F	#FFFFFF	#000000	##FFFFFF
##A81E1F	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B431D

Deuteranopia (green-blind)

#6D6118

Tritanopia (blue-blind)

#BA0021

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #a81e1f;
/* rgb */ color: rgb(168, 30, 31);
/* oklch */ color: oklch(47.5% 0.173 26.7);

Tailwind

colors: {
  custom: {
    50: '#cb695c',
    500: '#a81e1f',
    950: '#000000',
  },
}

SCSS

$custom: #a81e1f;
$custom-light: #cb695c;
$custom-dark: #000000;

JSON

{
  "hex": "#a81e1f",
  "rgb": {
    "r": 168,
    "g": 30,
    "b": 31
  },
  "hsl": {
    "h": 359.565,
    "s": 69.697,
    "l": 38.824
  },
  "oklch": {
    "l": 0.47483,
    "c": 0.17323,
    "h": 26.7
  },
  "luminance": 0.09352
}

Semantic roles & 50–950 ramp

primary

#A81E1F

secondary

#5BC7C6

accent

#EDEB3B

background

#FDF6F5

surface

#FBECE9

border

#D4C7C5

text

#150704

muted

#837A79

Preview Lab

Preview with #A81E1F

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

Preview Lab → · Contrast checker → · Palette generator →