#A63D25#A63D25

#A63D25 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.3% C 0.144 H 34.3°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#A63D25
RGB	rgb(166, 61, 37)
HSL	hsl(11, 64%, 40%)
HSV	hsv(11, 78%, 65%)
CMYK	cmyk(0%, 63.3%, 77.7%, 34.9%)
CIE-LAB	lab(40.54, 41.98, 36.74)
CIE-LCH	lch(40.54, 55.78, 41.19°)
OKLab	oklab(50.34% 0.1187 0.081)
OKLCH	oklch(50.34% 0.144 34.3)
XYZ	xyz(17.7305, 11.5806, 3.0515)
Luminance	0.1158 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63D25 #258EA6

analogous

#A6254D #A63D25 #A67E25

triadic

#A63D25 #25A63D #3D25A6

tetradic

#A63D25 #4DA625 #258EA6 #7E25A6

square

#A63D25 #4DA625 #258EA6 #7E25A6

split-complementary

#A63D25 #25A67E #254DA6

monochromatic

#42180F #742B1A #A63D25 #D25336 #DD7E68

Accessibility & contrast

On white

6.33

#A63D25 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#A63D25 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63D25

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63D25	#FFFFFF	#000000	##FFFFFF
##A63D25	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5122

Deuteranopia (green-blind)

#746821

Tritanopia (blue-blind)

#B72238

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #a63d25;
/* rgb */ color: rgb(166, 61, 37);
/* oklch */ color: oklch(50.3% 0.144 34.3);

Tailwind

colors: {
  custom: {
    50: '#c87761',
    500: '#a63d25',
    950: '#000000',
  },
}

SCSS

$custom: #a63d25;
$custom-light: #c87761;
$custom-dark: #000000;

JSON

{
  "hex": "#a63d25",
  "rgb": {
    "r": 166,
    "g": 61,
    "b": 37
  },
  "hsl": {
    "h": 11.163,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.50337,
    "c": 0.14374,
    "h": 34.3
  },
  "luminance": 0.11578
}

Semantic roles & 50–950 ramp

primary

#A63D25

secondary

#64B1C3

accent

#C8E741

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63D25

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

Preview Lab → · Contrast checker → · Palette generator →