#A63F25#A63F25

#A63F25 is a mid, vivid red. Relative luminance 0.118; OKLCH L 50.6% C 0.142 H 35.2°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#A63F25
RGB	rgb(166, 63, 37)
HSL	hsl(12, 64%, 40%)
HSV	hsv(12, 78%, 65%)
CMYK	cmyk(0%, 62%, 77.7%, 34.9%)
CIE-LAB	lab(40.89, 41.04, 37.10)
CIE-LCH	lch(40.89, 55.33, 42.11°)
OKLab	oklab(50.6% 0.1159 0.0818)
OKLCH	oklch(50.6% 0.142 35.2)
XYZ	xyz(17.8392, 11.7981, 3.0878)
Luminance	0.1180 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63F25 #258CA6

analogous

#A6254C #A63F25 #A68025

triadic

#A63F25 #25A63F #3F25A6

tetradic

#A63F25 #4CA625 #258CA6 #8025A6

square

#A63F25 #4CA625 #258CA6 #8025A6

split-complementary

#A63F25 #25A680 #254CA6

monochromatic

#42190F #742C1A #A63F25 #D25536 #DD8068

Accessibility & contrast

On white

6.25

#A63F25 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#A63F25 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63F25

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63F25	#FFFFFF	#000000	##FFFFFF
##A63F25	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5221

Deuteranopia (green-blind)

#756921

Tritanopia (blue-blind)

#B7263A

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63f25;
/* rgb */ color: rgb(166, 63, 37);
/* oklch */ color: oklch(50.6% 0.142 35.2);

Tailwind

colors: {
  custom: {
    50: '#c87861',
    500: '#a63f25',
    950: '#000000',
  },
}

SCSS

$custom: #a63f25;
$custom-light: #c87861;
$custom-dark: #000000;

JSON

{
  "hex": "#a63f25",
  "rgb": {
    "r": 166,
    "g": 63,
    "b": 37
  },
  "hsl": {
    "h": 12.093,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.50603,
    "c": 0.14182,
    "h": 35.2
  },
  "luminance": 0.11796
}

Semantic roles & 50–950 ramp

primary

#A63F25

secondary

#64B0C3

accent

#C5E741

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63F25

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

Preview Lab → · Contrast checker → · Palette generator →