#A63D3A#A63D3A

#A63D3A is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.6% C 0.139 H 25.0°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#A63D3A
RGB	rgb(166, 61, 58)
HSL	hsl(2, 48%, 44%)
HSV	hsv(2, 65%, 65%)
CMYK	cmyk(0%, 63.3%, 65.1%, 34.9%)
CIE-LAB	lab(40.82, 43.07, 24.88)
CIE-LCH	lch(40.82, 49.74, 30.01°)
OKLab	oklab(50.64% 0.1264 0.059)
OKLCH	oklch(50.64% 0.139 25)
XYZ	xyz(18.1601, 11.7524, 5.3143)
Luminance	0.1175 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D3A #3AA3A6

analogous

#A63A6D #A63D3A #A6733A

triadic

#A63D3A #3AA63D #3D3AA6

tetradic

#A63D3A #6DA63A #3AA3A6 #733AA6

square

#A63D3A #6DA63A #3AA3A6 #733AA6

split-complementary

#A63D3A #3AA673 #3A6DA6

monochromatic

#4B1C1A #792C2A #A63D3A #C55B58 #D58886

Accessibility & contrast

On white

6.27

#A63D3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#A63D3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D3A

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D3A	#FFFFFF	#000000	##FFFFFF
##A63D3A	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585239

Deuteranopia (green-blind)

#736937

Tritanopia (blue-blind)

#B6263D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63d3a;
/* rgb */ color: rgb(166, 61, 58);
/* oklch */ color: oklch(50.6% 0.139 25.0);

Tailwind

colors: {
  custom: {
    50: '#c77770',
    500: '#a63d3a',
    950: '#000000',
  },
}

SCSS

$custom: #a63d3a;
$custom-light: #c77770;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d3a",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 58
  },
  "hsl": {
    "h": 1.667,
    "s": 48.214,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50636,
    "c": 0.13946,
    "h": 25
  },
  "luminance": 0.1175
}

Semantic roles & 50–950 ramp

primary

#A63D3A

secondary

#7DBDBF

accent

#D4D850

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140907

muted

#837B7A

Preview Lab

Preview with #A63D3A

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

Preview Lab → · Contrast checker → · Palette generator →