#A63C2F#A63C2F

#A63C2F is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.3% C 0.143 H 29.9°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#A63C2F
RGB	rgb(166, 60, 47)
HSL	hsl(7, 56%, 42%)
HSV	hsv(7, 72%, 65%)
CMYK	cmyk(0%, 63.9%, 71.7%, 34.9%)
CIE-LAB	lab(40.49, 42.89, 31.03)
CIE-LCH	lch(40.49, 52.94, 35.88°)
OKLab	oklab(50.33% 0.1236 0.071)
OKLCH	oklch(50.33% 0.143 29.9)
XYZ	xyz(17.8567, 11.5464, 3.9772)
Luminance	0.1154 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C2F #2F99A6

analogous

#A62F5D #A63C2F #A6782F

triadic

#A63C2F #2FA63C #3C2FA6

tetradic

#A63C2F #5DA62F #2F99A6 #782FA6

square

#A63C2F #5DA62F #2F99A6 #782FA6

split-complementary

#A63C2F #2FA678 #2F5DA6

monochromatic

#471A14 #762B21 #A63C2F #CB5647 #D88277

Accessibility & contrast

On white

6.35

#A63C2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#A63C2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C2F

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C2F	#FFFFFF	#000000	##FFFFFF
##A63C2F	1.00	6.35	3.31	6.35
#FFFFFF	6.35	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59512D

Deuteranopia (green-blind)

#73682C

Tritanopia (blue-blind)

#B6223A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c2f;
/* rgb */ color: rgb(166, 60, 47);
/* oklch */ color: oklch(50.3% 0.143 29.9);

Tailwind

colors: {
  custom: {
    50: '#c77768',
    500: '#a63c2f',
    950: '#000000',
  },
}

SCSS

$custom: #a63c2f;
$custom-light: #c77768;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c2f",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 47
  },
  "hsl": {
    "h": 6.555,
    "s": 55.869,
    "l": 41.765
  },
  "oklch": {
    "l": 0.50333,
    "c": 0.14252,
    "h": 29.9
  },
  "luminance": 0.11544
}

Semantic roles & 50–950 ramp

primary

#A63C2F

secondary

#70B8C1

accent

#CFDF49

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A63C2F

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

Preview Lab → · Contrast checker → · Palette generator →