#A63128#A63128

#A63128 is a mid, vivid red. Relative luminance 0.105; OKLCH L 48.9% C 0.155 H 28.5°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#A63128
RGB	rgb(166, 49, 40)
HSL	hsl(4, 61%, 40%)
HSV	hsv(4, 76%, 65%)
CMYK	cmyk(0%, 70.5%, 75.9%, 34.9%)
CIE-LAB	lab(38.65, 47.28, 33.03)
CIE-LCH	lch(38.65, 57.68, 34.94°)
OKLab	oklab(48.93% 0.1359 0.0738)
OKLCH	oklch(48.93% 0.155 28.5)
XYZ	xyz(17.2091, 10.4594, 3.1198)
Luminance	0.1046 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63128 #289DA6

analogous

#A6285E #A63128 #A67028

triadic

#A63128 #28A631 #3128A6

tetradic

#A63128 #5EA628 #289DA6 #7028A6

square

#A63128 #5EA628 #289DA6 #7028A6

split-complementary

#A63128 #28A670 #285EA6

monochromatic

#431410 #75221C #A63128 #D0463B #DC756D

Accessibility & contrast

On white

6.79

#A63128 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#A63128 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63128

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63128	#FFFFFF	#000000	##FFFFFF
##A63128	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534B26

Deuteranopia (green-blind)

#706424

Tritanopia (blue-blind)

#B70630

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a63128;
/* rgb */ color: rgb(166, 49, 40);
/* oklch */ color: oklch(48.9% 0.155 28.5);

Tailwind

colors: {
  custom: {
    50: '#c87162',
    500: '#a63128',
    950: '#000000',
  },
}

SCSS

$custom: #a63128;
$custom-light: #c87162;
$custom-dark: #000000;

JSON

{
  "hex": "#a63128",
  "rgb": {
    "r": 166,
    "g": 49,
    "b": 40
  },
  "hsl": {
    "h": 4.286,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.48931,
    "c": 0.15462,
    "h": 28.5
  },
  "luminance": 0.10457
}

Semantic roles & 50–950 ramp

primary

#A63128

secondary

#67BCC2

accent

#D9E444

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150805

muted

#837B79

Preview Lab

Preview with #A63128

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

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