#A63133#A63133

#A63133 is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.1% C 0.153 H 23.9°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#A63133
RGB	rgb(166, 49, 51)
HSL	hsl(359, 54%, 42%)
HSV	hsv(359, 70%, 65%)
CMYK	cmyk(0%, 70.5%, 69.3%, 34.9%)
CIE-LAB	lab(38.80, 47.81, 26.65)
CIE-LCH	lch(38.80, 54.74, 29.14°)
OKLab	oklab(49.09% 0.1399 0.062)
OKLCH	oklch(49.09% 0.153 23.9)
XYZ	xyz(17.4236, 10.5452, 4.2493)
Luminance	0.1054 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63133 #31A6A4

analogous

#A6316E #A63133 #A66931

triadic

#A63133 #33A631 #3133A6

tetradic

#A63133 #6EA631 #31A6A4 #6931A6

square

#A63133 #6EA631 #31A6A4 #6931A6

split-complementary

#A63133 #31A669 #316EA6

monochromatic

#471516 #772324 #A63133 #CA4A4D #D87A7B

Accessibility & contrast

On white

6.76

#A63133 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#A63133 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63133

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63133	#FFFFFF	#000000	##FFFFFF
##A63133	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524B32

Deuteranopia (green-blind)

#6F652F

Tritanopia (blue-blind)

#B60C33

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a63133;
/* rgb */ color: rgb(166, 49, 51);
/* oklch */ color: oklch(49.1% 0.153 23.9);

Tailwind

colors: {
  custom: {
    50: '#c8716a',
    500: '#a63133',
    950: '#000000',
  },
}

SCSS

$custom: #a63133;
$custom-light: #c8716a;
$custom-dark: #000000;

JSON

{
  "hex": "#a63133",
  "rgb": {
    "r": 166,
    "g": 49,
    "b": 51
  },
  "hsl": {
    "h": 358.974,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.4909,
    "c": 0.15305,
    "h": 23.9
  },
  "luminance": 0.10543
}

Semantic roles & 50–950 ramp

primary

#A63133

secondary

#73C0BF

accent

#DEDB4A

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140806

muted

#837B7A

Preview Lab

Preview with #A63133

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

Preview Lab → · Contrast checker → · Palette generator →