#A63F40#A63F40

#A63F40 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.0% C 0.136 H 22.7°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#A63F40
RGB	rgb(166, 63, 64)
HSL	hsl(359, 45%, 45%)
HSV	hsv(359, 62%, 65%)
CMYK	cmyk(0%, 62%, 61.4%, 34.9%)
CIE-LAB	lab(41.27, 42.54, 21.79)
CIE-LCH	lch(41.27, 47.80, 27.12°)
OKLab	oklab(51.01% 0.1258 0.0526)
OKLCH	oklch(51.01% 0.136 22.7)
XYZ	xyz(18.4305, 12.0346, 6.2019)
Luminance	0.1203 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F40 #3FA6A5

analogous

#A63F74 #A63F40 #A6713F

triadic

#A63F40 #40A63F #3F40A6

tetradic

#A63F40 #74A63F #3FA6A5 #713FA6

square

#A63F40 #74A63F #3FA6A5 #713FA6

split-complementary

#A63F40 #3FA671 #3F74A6

monochromatic

#4D1D1E #7A2E2F #A63F40 #C36061 #D38C8D

Accessibility & contrast

On white

6.16

#A63F40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#A63F40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F40

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F40	#FFFFFF	#000000	##FFFFFF
##A63F40	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59543F

Deuteranopia (green-blind)

#73693D

Tritanopia (blue-blind)

#B62B40

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #a63f40;
/* rgb */ color: rgb(166, 63, 64);
/* oklch */ color: oklch(51.0% 0.136 22.7);

Tailwind

colors: {
  custom: {
    50: '#c67974',
    500: '#a63f40',
    950: '#000000',
  },
}

SCSS

$custom: #a63f40;
$custom-light: #c67974;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f40",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 64
  },
  "hsl": {
    "h": 359.417,
    "s": 44.978,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51009,
    "c": 0.13641,
    "h": 22.7
  },
  "luminance": 0.12032
}

Semantic roles & 50–950 ramp

primary

#A63F40

secondary

#83BEBE

accent

#D5D353

background

#FCF7F7

surface

#F9EEED

border

#D2C9C8

text

#140908

muted

#827B7B

Preview Lab

Preview with #A63F40

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

Preview Lab → · Contrast checker → · Palette generator →