#A63A25#A63A25

#A63A25 is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.0% C 0.147 H 33.0°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#A63A25
RGB	rgb(166, 58, 37)
HSL	hsl(10, 64%, 40%)
HSV	hsv(10, 78%, 65%)
CMYK	cmyk(0%, 65.1%, 77.7%, 34.9%)
CIE-LAB	lab(40.03, 43.34, 36.20)
CIE-LCH	lch(40.03, 56.47, 39.87°)
OKLab	oklab(49.95% 0.123 0.0798)
OKLCH	oklch(49.95% 0.147 33)
XYZ	xyz(17.5748, 11.2692, 2.9997)
Luminance	0.1127 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A25 #2591A6

analogous

#A62551 #A63A25 #A67A25

triadic

#A63A25 #25A63A #3A25A6

tetradic

#A63A25 #51A625 #2591A6 #7A25A6

square

#A63A25 #51A625 #2591A6 #7A25A6

split-complementary

#A63A25 #25A67A #2551A6

monochromatic

#42170F #74291A #A63A25 #D24F36 #DD7B68

Accessibility & contrast

On white

6.45

#A63A25 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#A63A25 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A25

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A25	#FFFFFF	#000000	##FFFFFF
##A63A25	1.00	6.45	3.25	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594F22

Deuteranopia (green-blind)

#736721

Tritanopia (blue-blind)

#B71D36

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63a25;
/* rgb */ color: rgb(166, 58, 37);
/* oklch */ color: oklch(50.0% 0.147 33.0);

Tailwind

colors: {
  custom: {
    50: '#c87561',
    500: '#a63a25',
    950: '#000000',
  },
}

SCSS

$custom: #a63a25;
$custom-light: #c87561;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a25",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 37
  },
  "hsl": {
    "h": 9.767,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49952,
    "c": 0.14662,
    "h": 33
  },
  "luminance": 0.11267
}

Semantic roles & 50–950 ramp

primary

#A63A25

secondary

#64B4C3

accent

#CCE741

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63A25

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

Preview Lab → · Contrast checker → · Palette generator →