#A63F23#A63F23

#A63F23 is a mid, vivid red. Relative luminance 0.118; OKLCH L 50.6% C 0.142 H 35.9°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#A63F23
RGB	rgb(166, 63, 35)
HSL	hsl(13, 65%, 39%)
HSV	hsv(13, 79%, 65%)
CMYK	cmyk(0%, 62%, 78.9%, 34.9%)
CIE-LAB	lab(40.87, 40.97, 38.15)
CIE-LCH	lch(40.87, 55.98, 42.96°)
OKLab	oklab(50.58% 0.1152 0.0835)
OKLCH	oklch(50.58% 0.142 35.9)
XYZ	xyz(17.8087, 11.7859, 2.9269)
Luminance	0.1178 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F23 #238AA6

analogous

#A62349 #A63F23 #A68023

triadic

#A63F23 #23A63F #3F23A6

tetradic

#A63F23 #49A623 #238AA6 #8023A6

square

#A63F23 #49A623 #238AA6 #8023A6

split-complementary

#A63F23 #23A680 #2349A6

monochromatic

#41190E #732C18 #A63F23 #D45532 #DF7F65

Accessibility & contrast

On white

6.26

#A63F23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#A63F23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F23

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F23	#FFFFFF	#000000	##FFFFFF
##A63F23	1.00	6.26	3.36	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C521F

Deuteranopia (green-blind)

#75691F

Tritanopia (blue-blind)

#B72539

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63f23;
/* rgb */ color: rgb(166, 63, 35);
/* oklch */ color: oklch(50.6% 0.142 35.9);

Tailwind

colors: {
  custom: {
    50: '#c87860',
    500: '#a63f23',
    950: '#000000',
  },
}

SCSS

$custom: #a63f23;
$custom-light: #c87860;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f23",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 35
  },
  "hsl": {
    "h": 12.824,
    "s": 65.174,
    "l": 39.412
  },
  "oklch": {
    "l": 0.50582,
    "c": 0.14231,
    "h": 35.9
  },
  "luminance": 0.11783
}

Semantic roles & 50–950 ramp

primary

#A63F23

secondary

#61AFC4

accent

#C4E840

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150905

muted

#837B79

Preview Lab

Preview with #A63F23

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

Preview Lab → · Contrast checker → · Palette generator →