#A63F35#A63F35

#A63F35 is a mid, vivid red. Relative luminance 0.119; OKLCH L 50.8% C 0.138 H 28.4°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#A63F35
RGB	rgb(166, 63, 53)
HSL	hsl(5, 52%, 43%)
HSV	hsv(5, 68%, 65%)
CMYK	cmyk(0%, 62%, 68.1%, 34.9%)
CIE-LAB	lab(41.09, 41.83, 28.21)
CIE-LCH	lch(41.09, 50.46, 33.99°)
OKLab	oklab(50.82% 0.1215 0.0658)
OKLCH	oklch(50.82% 0.138 28.4)
XYZ	xyz(18.1478, 11.9215, 4.7129)
Luminance	0.1192 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F35 #359CA6

analogous

#A63563 #A63F35 #A67735

triadic

#A63F35 #35A63F #3F35A6

tetradic

#A63F35 #63A635 #359CA6 #7735A6

square

#A63F35 #63A635 #359CA6 #7735A6

split-complementary

#A63F35 #35A677 #3563A6

monochromatic

#491C17 #782D26 #A63F35 #C75B51 #D6877F

Accessibility & contrast

On white

6.21

#A63F35 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#A63F35 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F35

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F35	#FFFFFF	#000000	##FFFFFF
##A63F35	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5333

Deuteranopia (green-blind)

#746932

Tritanopia (blue-blind)

#B6283D

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #a63f35;
/* rgb */ color: rgb(166, 63, 53);
/* oklch */ color: oklch(50.8% 0.138 28.4);

Tailwind

colors: {
  custom: {
    50: '#c7786c',
    500: '#a63f35',
    950: '#000000',
  },
}

SCSS

$custom: #a63f35;
$custom-light: #c7786c;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f35",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 53
  },
  "hsl": {
    "h": 5.31,
    "s": 51.598,
    "l": 42.941
  },
  "oklch": {
    "l": 0.50815,
    "c": 0.13816,
    "h": 28.4
  },
  "luminance": 0.11919
}

Semantic roles & 50–950 ramp

primary

#A63F35

secondary

#77B9BF

accent

#CEDB4D

background

#FDF7F6

surface

#FAEEEB

border

#D3C9C6

text

#140907

muted

#837B7A

Preview Lab

Preview with #A63F35

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

Preview Lab → · Contrast checker → · Palette generator →