#A63C28#A63C28

#A63C28 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.2% C 0.144 H 32.7°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#A63C28
RGB	rgb(166, 60, 40)
HSL	hsl(10, 61%, 40%)
HSV	hsv(10, 76%, 65%)
CMYK	cmyk(0%, 63.9%, 75.9%, 34.9%)
CIE-LAB	lab(40.40, 42.56, 34.94)
CIE-LCH	lch(40.40, 55.06, 39.38°)
OKLab	oklab(50.24% 0.1212 0.0779)
OKLCH	oklch(50.24% 0.144 32.7)
XYZ	xyz(17.7267, 11.4944, 3.2923)
Luminance	0.1149 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63C28 #2892A6

analogous

#A62853 #A63C28 #A67B28

triadic

#A63C28 #28A63C #3C28A6

tetradic

#A63C28 #53A628 #2892A6 #7B28A6

square

#A63C28 #53A628 #2892A6 #7B28A6

split-complementary

#A63C28 #28A67B #2853A6

monochromatic

#431810 #752A1C #A63C28 #D0533B #DC7E6D

Accessibility & contrast

On white

6.37

#A63C28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#A63C28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63C28

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63C28	#FFFFFF	#000000	##FFFFFF
##A63C28	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5125

Deuteranopia (green-blind)

#746824

Tritanopia (blue-blind)

#B72138

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63c28;
/* rgb */ color: rgb(166, 60, 40);
/* oklch */ color: oklch(50.2% 0.144 32.7);

Tailwind

colors: {
  custom: {
    50: '#c87763',
    500: '#a63c28',
    950: '#000000',
  },
}

SCSS

$custom: #a63c28;
$custom-light: #c87763;
$custom-dark: #000000;

JSON

{
  "hex": "#a63c28",
  "rgb": {
    "r": 166,
    "g": 60,
    "b": 40
  },
  "hsl": {
    "h": 9.524,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.50242,
    "c": 0.14403,
    "h": 32.7
  },
  "luminance": 0.11492
}

Semantic roles & 50–950 ramp

primary

#A63C28

secondary

#67B4C2

accent

#CBE444

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63C28

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

Preview Lab → · Contrast checker → · Palette generator →