#A63F39#A63F39

#A63F39 is a mid, vivid red. Relative luminance 0.120; OKLCH L 50.9% C 0.137 H 26.4°. Best body text is #FFFFFF at 6.19:1 contrast (WCAG AA passes).

Color values

HEX	#A63F39
RGB	rgb(166, 63, 57)
HSL	hsl(3, 49%, 44%)
HSV	hsv(3, 66%, 65%)
CMYK	cmyk(0%, 62%, 65.7%, 34.9%)
CIE-LAB	lab(41.15, 42.08, 25.89)
CIE-LCH	lch(41.15, 49.40, 31.61°)
OKLab	oklab(50.88% 0.1231 0.0612)
OKLCH	oklch(50.88% 0.137 26.4)
XYZ	xyz(18.2437, 11.9599, 5.2179)
Luminance	0.1196 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F39 #39A0A6

analogous

#A63969 #A63F39 #A67539

triadic

#A63F39 #39A63F #3F39A6

tetradic

#A63F39 #69A639 #39A0A6 #7539A6

square

#A63F39 #69A639 #39A0A6 #7539A6

split-complementary

#A63F39 #39A675 #3969A6

monochromatic

#4B1C1A #782E29 #A63F39 #C55D57 #D58984

Accessibility & contrast

On white

6.19

#A63F39 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#A63F39 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F39

6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F39	#FFFFFF	#000000	##FFFFFF
##A63F39	1.00	6.19	3.39	6.19
#FFFFFF	6.19	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5338

Deuteranopia (green-blind)

#746936

Tritanopia (blue-blind)

#B6293E

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #a63f39;
/* rgb */ color: rgb(166, 63, 57);
/* oklch */ color: oklch(50.9% 0.137 26.4);

Tailwind

colors: {
  custom: {
    50: '#c7796f',
    500: '#a63f39',
    950: '#000000',
  },
}

SCSS

$custom: #a63f39;
$custom-light: #c7796f;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f39",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 57
  },
  "hsl": {
    "h": 3.303,
    "s": 48.879,
    "l": 43.725
  },
  "oklch": {
    "l": 0.50881,
    "c": 0.13742,
    "h": 26.4
  },
  "luminance": 0.11957
}

Semantic roles & 50–950 ramp

primary

#A63F39

secondary

#7CBBBF

accent

#D1D84F

background

#FDF7F6

surface

#FAEEEC

border

#D3C9C7

text

#140907

muted

#837B7A

Preview Lab

Preview with #A63F39

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

Preview Lab → · Contrast checker → · Palette generator →