#A63C25#A63C25

#A63C25 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.2% C 0.145 H 33.9°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#A63C25
RGB	rgb(166, 60, 37)
HSL	hsl(11, 64%, 40%)
HSV	hsv(11, 78%, 65%)
CMYK	cmyk(0%, 63.9%, 77.7%, 34.9%)
CIE-LAB	lab(40.37, 42.44, 36.55)
CIE-LCH	lch(40.37, 56.01, 40.74°)
OKLab	oklab(50.21% 0.1202 0.0806)
OKLCH	oklch(50.21% 0.145 33.9)
XYZ	xyz(17.6776, 11.4748, 3.0339)
Luminance	0.1147 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C25 #258FA6

analogous

#A6254E #A63C25 #A67D25

triadic

#A63C25 #25A63C #3C25A6

tetradic

#A63C25 #4EA625 #258FA6 #7D25A6

square

#A63C25 #4EA625 #258FA6 #7D25A6

split-complementary

#A63C25 #25A67D #254EA6

monochromatic

#42180F #742A1A #A63C25 #D25236 #DD7D68

Accessibility & contrast

On white

6.37

#A63C25 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#A63C25 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C25

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C25	#FFFFFF	#000000	##FFFFFF
##A63C25	1.00	6.37	3.29	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5022

Deuteranopia (green-blind)

#746821

Tritanopia (blue-blind)

#B72137

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c25;
/* rgb */ color: rgb(166, 60, 37);
/* oklch */ color: oklch(50.2% 0.145 33.9);

Tailwind

colors: {
  custom: {
    50: '#c87761',
    500: '#a63c25',
    950: '#000000',
  },
}

SCSS

$custom: #a63c25;
$custom-light: #c87761;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c25",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 37
  },
  "hsl": {
    "h": 10.698,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.50207,
    "c": 0.1447,
    "h": 33.9
  },
  "luminance": 0.11472
}

Semantic roles & 50–950 ramp

primary

#A63C25

secondary

#64B2C3

accent

#C9E741

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63C25

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

Preview Lab → · Contrast checker → · Palette generator →