#A51F31#A51F31

#A51F31 is a mid, vivid red. Relative luminance 0.092; OKLCH L 47.2% C 0.168 H 20.1°. Best body text is #FFFFFF at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#A51F31
RGB	rgb(165, 31, 49)
HSL	hsl(352, 68%, 38%)
HSV	hsv(352, 81%, 65%)
CMYK	cmyk(0%, 81.2%, 70.3%, 35.3%)
CIE-LAB	lab(36.37, 53.53, 24.89)
CIE-LCH	lch(36.37, 59.03, 24.93°)
OKLab	oklab(47.24% 0.1578 0.0578)
OKLCH	oklch(47.24% 0.168 20.1)
XYZ	xyz(16.5633, 9.2037, 3.8095)
Luminance	0.0920 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A51F31 #1FA593

analogous

#A51F74 #A51F31 #A5501F

triadic

#A51F31 #31A51F #1F31A5

tetradic

#A51F31 #74A51F #1FA593 #501FA5

square

#A51F31 #74A51F #1FA593 #501FA5

split-complementary

#A51F31 #1FA550 #1F74A5

monochromatic

#3E0C12 #711522 #A51F31 #D72A41 #E15E6F

Accessibility & contrast

On white

7.39

#A51F31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#A51F31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A51F31

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A51F31	#FFFFFF	#000000	##FFFFFF
##A51F31	1.00	7.39	2.84	7.39
#FFFFFF	7.39	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484331

Deuteranopia (green-blind)

#6A602D

Tritanopia (blue-blind)

#B60027

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #a51f31;
/* rgb */ color: rgb(165, 31, 49);
/* oklch */ color: oklch(47.2% 0.168 20.1);

Tailwind

colors: {
  custom: {
    50: '#c86969',
    500: '#a51f31',
    950: '#000000',
  },
}

SCSS

$custom: #a51f31;
$custom-light: #c86969;
$custom-dark: #000000;

JSON

{
  "hex": "#a51f31",
  "rgb": {
    "r": 165,
    "g": 31,
    "b": 49
  },
  "hsl": {
    "h": 351.94,
    "s": 68.367,
    "l": 38.431
  },
  "oklch": {
    "l": 0.47237,
    "c": 0.16809,
    "h": 20.1
  },
  "luminance": 0.09201
}

Semantic roles & 50–950 ramp

primary

#A51F31

secondary

#5BC5B7

accent

#EBD43D

background

#FDF6F6

surface

#FAECEB

border

#D3C7C6

text

#150706

muted

#837A7A

Preview Lab

Preview with #A51F31

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

Preview Lab → · Contrast checker → · Palette generator →