#A63D23#A63D23

#A63D23 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.3% C 0.144 H 35.0°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#A63D23
RGB	rgb(166, 61, 35)
HSL	hsl(12, 65%, 39%)
HSV	hsv(12, 79%, 65%)
CMYK	cmyk(0%, 63.3%, 78.9%, 34.9%)
CIE-LAB	lab(40.52, 41.90, 37.79)
CIE-LCH	lch(40.52, 56.42, 42.05°)
OKLab	oklab(50.32% 0.1181 0.0827)
OKLCH	oklch(50.32% 0.144 35)
XYZ	xyz(17.6999, 11.5683, 2.8907)
Luminance	0.1157 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D23 #238CA6

analogous

#A6234B #A63D23 #A67E23

triadic

#A63D23 #23A63D #3D23A6

tetradic

#A63D23 #4BA623 #238CA6 #7E23A6

square

#A63D23 #4BA623 #238CA6 #7E23A6

split-complementary

#A63D23 #23A67E #234BA6

monochromatic

#41180E #732A18 #A63D23 #D45232 #DF7D65

Accessibility & contrast

On white

6.34

#A63D23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#A63D23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D23

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D23	#FFFFFF	#000000	##FFFFFF
##A63D23	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B511F

Deuteranopia (green-blind)

#75681F

Tritanopia (blue-blind)

#B72238

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63d23;
/* rgb */ color: rgb(166, 61, 35);
/* oklch */ color: oklch(50.3% 0.144 35.0);

Tailwind

colors: {
  custom: {
    50: '#c87760',
    500: '#a63d23',
    950: '#000000',
  },
}

SCSS

$custom: #a63d23;
$custom-light: #c87760;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d23",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 35
  },
  "hsl": {
    "h": 11.908,
    "s": 65.174,
    "l": 39.412
  },
  "oklch": {
    "l": 0.50316,
    "c": 0.1442,
    "h": 35
  },
  "luminance": 0.11566
}

Semantic roles & 50–950 ramp

primary

#A63D23

secondary

#61B0C4

accent

#C7E840

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150905

muted

#837B79

Preview Lab

Preview with #A63D23

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

Preview Lab → · Contrast checker → · Palette generator →