#A63D35#A63D35

#A63D35 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.6% C 0.140 H 27.5°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#A63D35
RGB	rgb(166, 61, 53)
HSL	hsl(4, 52%, 43%)
HSV	hsv(4, 68%, 65%)
CMYK	cmyk(0%, 63.3%, 68.1%, 34.9%)
CIE-LAB	lab(40.74, 42.76, 27.79)
CIE-LCH	lch(40.74, 51.00, 33.02°)
OKLab	oklab(50.55% 0.1244 0.0648)
OKLCH	oklch(50.55% 0.14 27.5)
XYZ	xyz(18.0390, 11.7040, 4.6767)
Luminance	0.1170 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D35 #359EA6

analogous

#A63565 #A63D35 #A67535

triadic

#A63D35 #35A63D #3D35A6

tetradic

#A63D35 #65A635 #359EA6 #7535A6

square

#A63D35 #65A635 #359EA6 #7535A6

split-complementary

#A63D35 #35A675 #3565A6

monochromatic

#491B17 #782C26 #A63D35 #C75951 #D6857F

Accessibility & contrast

On white

6.29

#A63D35 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#A63D35 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D35

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D35	#FFFFFF	#000000	##FFFFFF
##A63D35	1.00	6.29	3.34	6.29
#FFFFFF	6.29	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595234

Deuteranopia (green-blind)

#736932

Tritanopia (blue-blind)

#B6253C

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63d35;
/* rgb */ color: rgb(166, 61, 53);
/* oklch */ color: oklch(50.6% 0.140 27.5);

Tailwind

colors: {
  custom: {
    50: '#c7776c',
    500: '#a63d35',
    950: '#000000',
  },
}

SCSS

$custom: #a63d35;
$custom-light: #c7776c;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d35",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 53
  },
  "hsl": {
    "h": 4.248,
    "s": 51.598,
    "l": 42.941
  },
  "oklch": {
    "l": 0.50552,
    "c": 0.14029,
    "h": 27.5
  },
  "luminance": 0.11702
}

Semantic roles & 50–950 ramp

primary

#A63D35

secondary

#77BABF

accent

#D1DB4D

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140907

muted

#837B7A

Preview Lab

Preview with #A63D35

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

Preview Lab → · Contrast checker → · Palette generator →