#A63828#A63828

#A63828 is a mid, vivid red. Relative luminance 0.111; OKLCH L 49.7% C 0.148 H 31.1°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#A63828
RGB	rgb(166, 56, 40)
HSL	hsl(8, 61%, 40%)
HSV	hsv(8, 76%, 65%)
CMYK	cmyk(0%, 66.3%, 75.9%, 34.9%)
CIE-LAB	lab(39.73, 44.35, 34.21)
CIE-LCH	lch(39.73, 56.01, 37.64°)
OKLab	oklab(49.74% 0.1267 0.0763)
OKLCH	oklch(49.74% 0.148 31.1)
XYZ	xyz(17.5250, 11.0911, 3.2251)
Luminance	0.1109 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63828 #2896A6

analogous

#A62857 #A63828 #A67728

triadic

#A63828 #28A638 #3828A6

tetradic

#A63828 #57A628 #2896A6 #7728A6

square

#A63828 #57A628 #2896A6 #7728A6

split-complementary

#A63828 #28A677 #2857A6

monochromatic

#431710 #75271C #A63828 #D04E3B #DC7B6D

Accessibility & contrast

On white

6.53

#A63828 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#A63828 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63828

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63828	#FFFFFF	#000000	##FFFFFF
##A63828	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574E26

Deuteranopia (green-blind)

#726724

Tritanopia (blue-blind)

#B71A35

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63828;
/* rgb */ color: rgb(166, 56, 40);
/* oklch */ color: oklch(49.7% 0.148 31.1);

Tailwind

colors: {
  custom: {
    50: '#c87463',
    500: '#a63828',
    950: '#000000',
  },
}

SCSS

$custom: #a63828;
$custom-light: #c87463;
$custom-dark: #000000;

JSON

{
  "hex": "#a63828",
  "rgb": {
    "r": 166,
    "g": 56,
    "b": 40
  },
  "hsl": {
    "h": 7.619,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.4974,
    "c": 0.14793,
    "h": 31.1
  },
  "luminance": 0.11089
}

Semantic roles & 50–950 ramp

primary

#A63828

secondary

#67B7C2

accent

#D0E444

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63828

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

Preview Lab → · Contrast checker → · Palette generator →