#A63F1E#A63F1E

#A63F1E is a mid, vivid red. Relative luminance 0.118; OKLCH L 50.5% C 0.143 H 37.5°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#A63F1E
RGB	rgb(166, 63, 30)
HSL	hsl(15, 69%, 38%)
HSV	hsv(15, 82%, 65%)
CMYK	cmyk(0%, 62%, 81.9%, 34.9%)
CIE-LAB	lab(40.83, 40.79, 40.66)
CIE-LCH	lch(40.83, 57.59, 44.91°)
OKLab	oklab(50.53% 0.1138 0.0874)
OKLCH	oklch(50.53% 0.143 37.5)
XYZ	xyz(17.7397, 11.7583, 2.5635)
Luminance	0.1176 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F1E #1E85A6

analogous

#A61E41 #A63F1E #A6831E

triadic

#A63F1E #1EA63F #3F1EA6

tetradic

#A63F1E #41A61E #1E85A6 #831EA6

square

#A63F1E #41A61E #1E85A6 #831EA6

split-complementary

#A63F1E #1EA683 #1E41A6

monochromatic

#3E180B #722B15 #A63F1E #D85329 #E27D5D

Accessibility & contrast

On white

6.27

#A63F1E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#A63F1E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F1E

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F1E	#FFFFFF	#000000	##FFFFFF
##A63F1E	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5219

Deuteranopia (green-blind)

#76691A

Tritanopia (blue-blind)

#B72538

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63f1e;
/* rgb */ color: rgb(166, 63, 30);
/* oklch */ color: oklch(50.5% 0.143 37.5);

Tailwind

colors: {
  custom: {
    50: '#c8785d',
    500: '#a63f1e',
    950: '#000000',
  },
}

SCSS

$custom: #a63f1e;
$custom-light: #c8785d;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f1e",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 30
  },
  "hsl": {
    "h": 14.559,
    "s": 69.388,
    "l": 38.431
  },
  "oklch": {
    "l": 0.50534,
    "c": 0.14349,
    "h": 37.5
  },
  "luminance": 0.11756
}

Semantic roles & 50–950 ramp

primary

#A63F1E

secondary

#5AACC6

accent

#C1EC3C

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #A63F1E

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

Preview Lab → · Contrast checker → · Palette generator →