#A63C1C#A63C1C

#A63C1C is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.1% C 0.147 H 36.8°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#A63C1C
RGB	rgb(166, 60, 28)
HSL	hsl(14, 71%, 38%)
HSV	hsv(14, 83%, 65%)
CMYK	cmyk(0%, 63.9%, 83.1%, 34.9%)
CIE-LAB	lab(40.29, 42.12, 41.13)
CIE-LCH	lch(40.29, 58.87, 44.32°)
OKLab	oklab(50.12% 0.1175 0.0878)
OKLCH	oklch(50.12% 0.147 36.8)
XYZ	xyz(17.5533, 11.4251, 2.3794)
Luminance	0.1142 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C1C #1C86A6

analogous

#A61C41 #A63C1C #A6811C

triadic

#A63C1C #1CA63C #3C1CA6

tetradic

#A63C1C #41A61C #1C86A6 #811CA6

square

#A63C1C #41A61C #1C86A6 #811CA6

split-complementary

#A63C1C #1CA681 #1C41A6

monochromatic

#3D160A #722913 #A63C1C #DA4F25 #E37959

Accessibility & contrast

On white

6.39

#A63C1C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#A63C1C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C1C

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C1C	#FFFFFF	#000000	##FFFFFF
##A63C1C	1.00	6.39	3.28	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5017

Deuteranopia (green-blind)

#756817

Tritanopia (blue-blind)

#B71F36

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c1c;
/* rgb */ color: rgb(166, 60, 28);
/* oklch */ color: oklch(50.1% 0.147 36.8);

Tailwind

colors: {
  custom: {
    50: '#c9765b',
    500: '#a63c1c',
    950: '#000000',
  },
}

SCSS

$custom: #a63c1c;
$custom-light: #c9765b;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c1c",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 28
  },
  "hsl": {
    "h": 13.913,
    "s": 71.134,
    "l": 38.039
  },
  "oklch": {
    "l": 0.5012,
    "c": 0.1467,
    "h": 36.8
  },
  "luminance": 0.11423
}

Semantic roles & 50–950 ramp

primary

#A63C1C

secondary

#57ADC7

accent

#C4EE3A

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63C1C

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

Preview Lab → · Contrast checker → · Palette generator →