#A63A35#A63A35

#A63A35 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.2% C 0.143 H 26.3°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#A63A35
RGB	rgb(166, 58, 53)
HSL	hsl(3, 52%, 43%)
HSV	hsv(3, 68%, 65%)
CMYK	cmyk(0%, 65.1%, 68.1%, 34.9%)
CIE-LAB	lab(40.23, 44.12, 27.17)
CIE-LCH	lch(40.23, 51.82, 31.63°)
OKLab	oklab(50.17% 0.1287 0.0635)
OKLCH	oklch(50.17% 0.143 26.3)
XYZ	xyz(17.8834, 11.3926, 4.6248)
Luminance	0.1139 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A35 #35A1A6

analogous

#A63568 #A63A35 #A67235

triadic

#A63A35 #35A63A #3A35A6

tetradic

#A63A35 #68A635 #35A1A6 #7235A6

square

#A63A35 #68A635 #35A1A6 #7235A6

split-complementary

#A63A35 #35A672 #3568A6

monochromatic

#491A17 #782A26 #A63A35 #C75651 #D6837F

Accessibility & contrast

On white

6.41

#A63A35 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#A63A35 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A35

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A35	#FFFFFF	#000000	##FFFFFF
##A63A35	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575034

Deuteranopia (green-blind)

#726732

Tritanopia (blue-blind)

#B6203A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63a35;
/* rgb */ color: rgb(166, 58, 53);
/* oklch */ color: oklch(50.2% 0.143 26.3);

Tailwind

colors: {
  custom: {
    50: '#c7766c',
    500: '#a63a35',
    950: '#000000',
  },
}

SCSS

$custom: #a63a35;
$custom-light: #c7766c;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a35",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 53
  },
  "hsl": {
    "h": 2.655,
    "s": 51.598,
    "l": 42.941
  },
  "oklch": {
    "l": 0.50171,
    "c": 0.14349,
    "h": 26.3
  },
  "luminance": 0.1139
}

Semantic roles & 50–950 ramp

primary

#A63A35

secondary

#77BCBF

accent

#D5DB4D

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140907

muted

#837B7A

Preview Lab

Preview with #A63A35

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

Preview Lab → · Contrast checker → · Palette generator →