#A63B3D#A63B3D

#A63B3D is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.4% C 0.141 H 22.6°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#A63B3D
RGB	rgb(166, 59, 61)
HSL	hsl(359, 48%, 44%)
HSV	hsv(359, 64%, 65%)
CMYK	cmyk(0%, 64.5%, 63.3%, 34.9%)
CIE-LAB	lab(40.53, 44.17, 22.68)
CIE-LCH	lch(40.53, 49.66, 27.18°)
OKLab	oklab(50.44% 0.1304 0.0544)
OKLCH	oklch(50.44% 0.141 22.6)
XYZ	xyz(18.1339, 11.5743, 5.6931)
Luminance	0.1157 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B3D #3BA6A4

analogous

#A63B73 #A63B3D #A66F3B

triadic

#A63B3D #3DA63B #3B3DA6

tetradic

#A63B3D #73A63B #3BA6A4 #6F3BA6

square

#A63B3D #73A63B #3BA6A4 #6F3BA6

split-complementary

#A63B3D #3BA66F #3B73A6

monochromatic

#4C1B1C #792B2C #A63B3D #C45A5C #D48788

Accessibility & contrast

On white

6.34

#A63B3D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#A63B3D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B3D

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B3D	#FFFFFF	#000000	##FFFFFF
##A63B3D	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57513C

Deuteranopia (green-blind)

#72683A

Tritanopia (blue-blind)

#B6243D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63b3d;
/* rgb */ color: rgb(166, 59, 61);
/* oklch */ color: oklch(50.4% 0.141 22.6);

Tailwind

colors: {
  custom: {
    50: '#c77672',
    500: '#a63b3d',
    950: '#000000',
  },
}

SCSS

$custom: #a63b3d;
$custom-light: #c77672;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b3d",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 61
  },
  "hsl": {
    "h": 358.879,
    "s": 47.556,
    "l": 44.118
  },
  "oklch": {
    "l": 0.50436,
    "c": 0.14132,
    "h": 22.6
  },
  "luminance": 0.11572
}

Semantic roles & 50–950 ramp

primary

#A63B3D

secondary

#7EBFBD

accent

#D7D551

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140908

muted

#837B7B

Preview Lab

Preview with #A63B3D

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

Preview Lab → · Contrast checker → · Palette generator →