#A63C1B#A63C1B

#A63C1B is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.1% C 0.147 H 37.0°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#A63C1B
RGB	rgb(166, 60, 27)
HSL	hsl(14, 72%, 38%)
HSV	hsv(14, 84%, 65%)
CMYK	cmyk(0%, 63.9%, 83.7%, 34.9%)
CIE-LAB	lab(40.28, 42.09, 41.61)
CIE-LCH	lch(40.28, 59.18, 44.67°)
OKLab	oklab(50.11% 0.1173 0.0885)
OKLCH	oklch(50.11% 0.147 37)
XYZ	xyz(17.5415, 11.4204, 2.3174)
Luminance	0.1142 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C1B #1B85A6

analogous

#A61B3F #A63C1B #A6821B

triadic

#A63C1B #1BA63C #3C1BA6

tetradic

#A63C1B #3FA61B #1B85A6 #821BA6

square

#A63C1B #3FA61B #1B85A6 #821BA6

split-complementary

#A63C1B #1BA682 #1B3FA6

monochromatic

#3D160A #712912 #A63C1B #DB4F24 #E47958

Accessibility & contrast

On white

6.40

#A63C1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#A63C1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C1B

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C1B	#FFFFFF	#000000	##FFFFFF
##A63C1B	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5016

Deuteranopia (green-blind)

#756816

Tritanopia (blue-blind)

#B71F36

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c1b;
/* rgb */ color: rgb(166, 60, 27);
/* oklch */ color: oklch(50.1% 0.147 37.0);

Tailwind

colors: {
  custom: {
    50: '#c9765a',
    500: '#a63c1b',
    950: '#000000',
  },
}

SCSS

$custom: #a63c1b;
$custom-light: #c9765a;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c1b",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 27
  },
  "hsl": {
    "h": 14.245,
    "s": 72.021,
    "l": 37.843
  },
  "oklch": {
    "l": 0.50112,
    "c": 0.14691,
    "h": 37
  },
  "luminance": 0.11418
}

Semantic roles & 50–950 ramp

primary

#A63C1B

secondary

#56ACC7

accent

#C4EF39

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63C1B

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

Preview Lab → · Contrast checker → · Palette generator →