#A63E1F#A63E1F

#A63E1F is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.4% C 0.144 H 36.8°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#A63E1F
RGB	rgb(166, 62, 31)
HSL	hsl(14, 69%, 39%)
HSV	hsv(14, 81%, 65%)
CMYK	cmyk(0%, 62.7%, 81.3%, 34.9%)
CIE-LAB	lab(40.66, 41.29, 40.00)
CIE-LCH	lch(40.66, 57.49, 44.09°)
OKLab	oklab(50.41% 0.1155 0.0863)
OKLCH	oklch(50.41% 0.144 36.8)
XYZ	xyz(17.6978, 11.6537, 2.6135)
Luminance	0.1165 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63E1F #1F87A6

analogous

#A61F43 #A63E1F #A6811F

triadic

#A63E1F #1FA63E #3E1FA6

tetradic

#A63E1F #43A61F #1F87A6 #811FA6

square

#A63E1F #43A61F #1F87A6 #811FA6

split-complementary

#A63E1F #1FA681 #1F43A6

monochromatic

#3F170C #722B15 #A63E1F #D7522B #E17C5E

Accessibility & contrast

On white

6.31

#A63E1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#A63E1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63E1F

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63E1F	#FFFFFF	#000000	##FFFFFF
##A63E1F	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C511A

Deuteranopia (green-blind)

#75691B

Tritanopia (blue-blind)

#B72338

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63e1f;
/* rgb */ color: rgb(166, 62, 31);
/* oklch */ color: oklch(50.4% 0.144 36.8);

Tailwind

colors: {
  custom: {
    50: '#c8785d',
    500: '#a63e1f',
    950: '#000000',
  },
}

SCSS

$custom: #a63e1f;
$custom-light: #c8785d;
$custom-dark: #000000;

JSON

{
  "hex": "#a63e1f",
  "rgb": {
    "r": 166,
    "g": 62,
    "b": 31
  },
  "hsl": {
    "h": 13.778,
    "s": 68.528,
    "l": 38.627
  },
  "oklch": {
    "l": 0.50409,
    "c": 0.14419,
    "h": 36.8
  },
  "luminance": 0.11651
}

Semantic roles & 50–950 ramp

primary

#A63E1F

secondary

#5BADC5

accent

#C3EB3C

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63E1F

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

Preview Lab → · Contrast checker → · Palette generator →