#A63C40#A63C40

#A63C40 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.6% C 0.140 H 21.4°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#A63C40
RGB	rgb(166, 60, 64)
HSL	hsl(358, 47%, 44%)
HSV	hsv(358, 64%, 65%)
CMYK	cmyk(0%, 63.9%, 61.4%, 34.9%)
CIE-LAB	lab(40.75, 43.93, 21.12)
CIE-LCH	lch(40.75, 48.74, 25.68°)
OKLab	oklab(50.62% 0.1302 0.0511)
OKLCH	oklch(50.62% 0.14 21.4)
XYZ	xyz(18.2689, 11.7113, 6.1480)
Luminance	0.1171 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C40 #3CA6A2

analogous

#A63C75 #A63C40 #A66D3C

triadic

#A63C40 #40A63C #3C40A6

tetradic

#A63C40 #75A63C #3CA6A2 #6D3CA6

square

#A63C40 #75A63C #3CA6A2 #6D3CA6

split-complementary

#A63C40 #3CA66D #3C75A6

monochromatic

#4C1C1D #792C2F #A63C40 #C45B5F #D4888B

Accessibility & contrast

On white

6.28

#A63C40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#A63C40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C40

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C40	#FFFFFF	#000000	##FFFFFF
##A63C40	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57523F

Deuteranopia (green-blind)

#72683D

Tritanopia (blue-blind)

#B6263E

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63c40;
/* rgb */ color: rgb(166, 60, 64);
/* oklch */ color: oklch(50.6% 0.140 21.4);

Tailwind

colors: {
  custom: {
    50: '#c67774',
    500: '#a63c40',
    950: '#000000',
  },
}

SCSS

$custom: #a63c40;
$custom-light: #c67774;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c40",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 64
  },
  "hsl": {
    "h": 357.736,
    "s": 46.903,
    "l": 44.314
  },
  "oklch": {
    "l": 0.5062,
    "c": 0.13988,
    "h": 21.4
  },
  "luminance": 0.11709
}

Semantic roles & 50–950 ramp

primary

#A63C40

secondary

#7FBEBC

accent

#D7D251

background

#FCF7F7

surface

#F9EDED

border

#D2C8C8

text

#140908

muted

#827B7B

Preview Lab

Preview with #A63C40

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

Preview Lab → · Contrast checker → · Palette generator →