#A63D28#A63D28

#A63D28 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.4% C 0.143 H 33.2°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#A63D28
RGB	rgb(166, 61, 40)
HSL	hsl(10, 61%, 40%)
HSV	hsv(10, 76%, 65%)
CMYK	cmyk(0%, 63.3%, 75.9%, 34.9%)
CIE-LAB	lab(40.57, 42.10, 35.12)
CIE-LCH	lch(40.57, 54.83, 39.83°)
OKLab	oklab(50.37% 0.1197 0.0783)
OKLCH	oklch(50.37% 0.143 33.2)
XYZ	xyz(17.7795, 11.6002, 3.3099)
Luminance	0.1160 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D28 #2891A6

analogous

#A62852 #A63D28 #A67C28

triadic

#A63D28 #28A63D #3D28A6

tetradic

#A63D28 #52A628 #2891A6 #7C28A6

square

#A63D28 #52A628 #2891A6 #7C28A6

split-complementary

#A63D28 #28A67C #2852A6

monochromatic

#431910 #752B1C #A63D28 #D0543B #DC7F6D

Accessibility & contrast

On white

6.33

#A63D28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#A63D28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D28

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D28	#FFFFFF	#000000	##FFFFFF
##A63D28	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5125

Deuteranopia (green-blind)

#746824

Tritanopia (blue-blind)

#B72339

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63d28;
/* rgb */ color: rgb(166, 61, 40);
/* oklch */ color: oklch(50.4% 0.143 33.2);

Tailwind

colors: {
  custom: {
    50: '#c87763',
    500: '#a63d28',
    950: '#000000',
  },
}

SCSS

$custom: #a63d28;
$custom-light: #c87763;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d28",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 40
  },
  "hsl": {
    "h": 10,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.50372,
    "c": 0.14305,
    "h": 33.2
  },
  "luminance": 0.11598
}

Semantic roles & 50–950 ramp

primary

#A63D28

secondary

#67B3C2

accent

#C9E444

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#140905

muted

#837B79

Preview Lab

Preview with #A63D28

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

Preview Lab → · Contrast checker → · Palette generator →