#A63A1F#A63A1F

#A63A1F is a mid, vivid red. Relative luminance 0.112; OKLCH L 49.9% C 0.148 H 35.0°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#A63A1F
RGB	rgb(166, 58, 31)
HSL	hsl(12, 69%, 39%)
HSV	hsv(12, 81%, 65%)
CMYK	cmyk(0%, 65.1%, 81.3%, 34.9%)
CIE-LAB	lab(39.97, 43.12, 39.33)
CIE-LCH	lch(39.97, 58.36, 42.37°)
OKLab	oklab(49.89% 0.1212 0.0848)
OKLCH	oklch(49.89% 0.148 35)
XYZ	xyz(17.4882, 11.2346, 2.5437)
Luminance	0.1123 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A1F #1F8BA6

analogous

#A61F47 #A63A1F #A67D1F

triadic

#A63A1F #1FA63A #3A1FA6

tetradic

#A63A1F #47A61F #1F8BA6 #7D1FA6

square

#A63A1F #47A61F #1F8BA6 #7D1FA6

split-complementary

#A63A1F #1FA67D #1F47A6

monochromatic

#3F160C #722815 #A63A1F #D74D2B #E1795E

Accessibility & contrast

On white

6.47

#A63A1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#A63A1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A1F

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A1F	#FFFFFF	#000000	##FFFFFF
##A63A1F	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594F1B

Deuteranopia (green-blind)

#74671A

Tritanopia (blue-blind)

#B71C35

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63a1f;
/* rgb */ color: rgb(166, 58, 31);
/* oklch */ color: oklch(49.9% 0.148 35.0);

Tailwind

colors: {
  custom: {
    50: '#c9755d',
    500: '#a63a1f',
    950: '#000000',
  },
}

SCSS

$custom: #a63a1f;
$custom-light: #c9755d;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a1f",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 31
  },
  "hsl": {
    "h": 12,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.49891,
    "c": 0.14791,
    "h": 35
  },
  "luminance": 0.11232
}

Semantic roles & 50–950 ramp

primary

#A63A1F

secondary

#5BB0C5

accent

#C8EB3C

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63A1F

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

Preview Lab → · Contrast checker → · Palette generator →