#A63028#A63028

#A63028 is a mid, vivid red. Relative luminance 0.104; OKLCH L 48.8% C 0.156 H 28.2°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#A63028
RGB	rgb(166, 48, 40)
HSL	hsl(4, 61%, 40%)
HSV	hsv(4, 76%, 65%)
CMYK	cmyk(0%, 71.1%, 75.9%, 34.9%)
CIE-LAB	lab(38.51, 47.68, 32.87)
CIE-LCH	lch(38.51, 57.91, 34.59°)
OKLab	oklab(48.82% 0.1371 0.0734)
OKLCH	oklch(48.82% 0.156 28.2)
XYZ	xyz(17.1678, 10.3767, 3.1060)
Luminance	0.1037 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63028 #289EA6

analogous

#A6285F #A63028 #A66F28

triadic

#A63028 #28A630 #3028A6

tetradic

#A63028 #5FA628 #289EA6 #6F28A6

square

#A63028 #5FA628 #289EA6 #6F28A6

split-complementary

#A63028 #28A66F #285FA6

monochromatic

#431310 #75221C #A63028 #D0453B #DC746D

Accessibility & contrast

On white

6.83

#A63028 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#A63028 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63028

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63028	#FFFFFF	#000000	##FFFFFF
##A63028	1.00	6.83	3.07	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524A26

Deuteranopia (green-blind)

#706424

Tritanopia (blue-blind)

#B7022F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a63028;
/* rgb */ color: rgb(166, 48, 40);
/* oklch */ color: oklch(48.8% 0.156 28.2);

Tailwind

colors: {
  custom: {
    50: '#c97062',
    500: '#a63028',
    950: '#000000',
  },
}

SCSS

$custom: #a63028;
$custom-light: #c97062;
$custom-dark: #000000;

JSON

{
  "hex": "#a63028",
  "rgb": {
    "r": 166,
    "g": 48,
    "b": 40
  },
  "hsl": {
    "h": 3.81,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.48823,
    "c": 0.15555,
    "h": 28.2
  },
  "luminance": 0.10374
}

Semantic roles & 50–950 ramp

primary

#A63028

secondary

#67BDC2

accent

#DAE444

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150805

muted

#837B79

Preview Lab

Preview with #A63028

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

Preview Lab → · Contrast checker → · Palette generator →