#A63D39#A63D39

#A63D39 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.6% C 0.140 H 25.5°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#A63D39
RGB	rgb(166, 61, 57)
HSL	hsl(2, 49%, 44%)
HSV	hsv(2, 66%, 65%)
CMYK	cmyk(0%, 63.3%, 65.7%, 34.9%)
CIE-LAB	lab(40.80, 43.00, 25.46)
CIE-LCH	lch(40.80, 49.98, 30.63°)
OKLab	oklab(50.62% 0.126 0.0602)
OKLCH	oklch(50.62% 0.14 25.5)
XYZ	xyz(18.1349, 11.7423, 5.1817)
Luminance	0.1174 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D39 #39A2A6

analogous

#A6396B #A63D39 #A67339

triadic

#A63D39 #39A63D #3D39A6

tetradic

#A63D39 #6BA639 #39A2A6 #7339A6

square

#A63D39 #6BA639 #39A2A6 #7339A6

split-complementary

#A63D39 #39A673 #396BA6

monochromatic

#4B1C1A #782C29 #A63D39 #C55B57 #D58784

Accessibility & contrast

On white

6.27

#A63D39 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#A63D39 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D39

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D39	#FFFFFF	#000000	##FFFFFF
##A63D39	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595238

Deuteranopia (green-blind)

#736936

Tritanopia (blue-blind)

#B6263D

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63d39;
/* rgb */ color: rgb(166, 61, 57);
/* oklch */ color: oklch(50.6% 0.140 25.5);

Tailwind

colors: {
  custom: {
    50: '#c7776f',
    500: '#a63d39',
    950: '#000000',
  },
}

SCSS

$custom: #a63d39;
$custom-light: #c7776f;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d39",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 57
  },
  "hsl": {
    "h": 2.202,
    "s": 48.879,
    "l": 43.725
  },
  "oklch": {
    "l": 0.50619,
    "c": 0.13962,
    "h": 25.5
  },
  "luminance": 0.1174
}

Semantic roles & 50–950 ramp

primary

#A63D39

secondary

#7CBCBF

accent

#D3D84F

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140907

muted

#837B7A

Preview Lab

Preview with #A63D39

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

Preview Lab → · Contrast checker → · Palette generator →