#A63137#A63137

#A63137 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.2% C 0.153 H 22.0°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#A63137
RGB	rgb(166, 49, 55)
HSL	hsl(357, 54%, 42%)
HSV	hsv(357, 70%, 65%)
CMYK	cmyk(0%, 70.5%, 66.9%, 34.9%)
CIE-LAB	lab(38.87, 48.04, 24.27)
CIE-LCH	lch(38.87, 53.82, 26.81°)
OKLab	oklab(49.16% 0.1415 0.0573)
OKLCH	oklch(49.16% 0.153 22)
XYZ	xyz(17.5156, 10.5820, 4.7339)
Luminance	0.1058 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63137 #31A6A0

analogous

#A63172 #A63137 #A66631

triadic

#A63137 #37A631 #3137A6

tetradic

#A63137 #72A631 #31A6A0 #6631A6

square

#A63137 #72A631 #31A6A0 #6631A6

split-complementary

#A63137 #31A666 #3172A6

monochromatic

#471518 #772327 #A63137 #CA4A51 #D87A7F

Accessibility & contrast

On white

6.74

#A63137 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#A63137 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63137

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63137	#FFFFFF	#000000	##FFFFFF
##A63137	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514C36

Deuteranopia (green-blind)

#6F6534

Tritanopia (blue-blind)

#B60E34

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a63137;
/* rgb */ color: rgb(166, 49, 55);
/* oklch */ color: oklch(49.2% 0.153 22.0);

Tailwind

colors: {
  custom: {
    50: '#c7716d',
    500: '#a63137',
    950: '#000000',
  },
}

SCSS

$custom: #a63137;
$custom-light: #c7716d;
$custom-dark: #000000;

JSON

{
  "hex": "#a63137",
  "rgb": {
    "r": 166,
    "g": 49,
    "b": 55
  },
  "hsl": {
    "h": 356.923,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.49158,
    "c": 0.15263,
    "h": 22
  },
  "luminance": 0.10579
}

Semantic roles & 50–950 ramp

primary

#A63137

secondary

#73C0BC

accent

#DED64A

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140807

muted

#837B7A

Preview Lab

Preview with #A63137

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

Preview Lab → · Contrast checker → · Palette generator →