#A63D1D#A63D1D

#A63D1D is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.3% C 0.146 H 36.9°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#A63D1D
RGB	rgb(166, 61, 29)
HSL	hsl(14, 70%, 38%)
HSV	hsv(14, 83%, 65%)
CMYK	cmyk(0%, 63.3%, 82.5%, 34.9%)
CIE-LAB	lab(40.47, 41.69, 40.81)
CIE-LCH	lch(40.47, 58.34, 44.39°)
OKLab	oklab(50.26% 0.1164 0.0874)
OKLCH	oklch(50.26% 0.146 36.9)
XYZ	xyz(17.6184, 11.5357, 2.4611)
Luminance	0.1153 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D1D #1D86A6

analogous

#A61D41 #A63D1D #A6811D

triadic

#A63D1D #1DA63D #3D1DA6

tetradic

#A63D1D #41A61D #1D86A6 #811DA6

square

#A63D1D #41A61D #1D86A6 #811DA6

split-complementary

#A63D1D #1DA681 #1D41A6

monochromatic

#3E170B #722A14 #A63D1D #D95127 #E27B5B

Accessibility & contrast

On white

6.35

#A63D1D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#A63D1D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D1D

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D1D	#FFFFFF	#000000	##FFFFFF
##A63D1D	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)

#5B5118

Deuteranopia (green-blind)

#756818

Tritanopia (blue-blind)

#B72137

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63d1d;
/* rgb */ color: rgb(166, 61, 29);
/* oklch */ color: oklch(50.3% 0.146 36.9);

Tailwind

colors: {
  custom: {
    50: '#c9775c',
    500: '#a63d1d',
    950: '#000000',
  },
}

SCSS

$custom: #a63d1d;
$custom-light: #c9775c;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d1d",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 29
  },
  "hsl": {
    "h": 14.015,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.50259,
    "c": 0.14556,
    "h": 36.9
  },
  "luminance": 0.11533
}

Semantic roles & 50–950 ramp

primary

#A63D1D

secondary

#59ADC6

accent

#C3ED3B

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63D1D

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

Preview Lab → · Contrast checker → · Palette generator →