#A63027#A63027

#A63027 is a mid, vivid red. Relative luminance 0.104; OKLCH L 48.8% C 0.156 H 28.5°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#A63027
RGB	rgb(166, 48, 39)
HSL	hsl(4, 62%, 40%)
HSV	hsv(4, 77%, 65%)
CMYK	cmyk(0%, 71.1%, 76.5%, 34.9%)
CIE-LAB	lab(38.50, 47.64, 33.44)
CIE-LCH	lch(38.50, 58.20, 35.07°)
OKLab	oklab(48.81% 0.1368 0.0744)
OKLCH	oklch(48.81% 0.156 28.5)
XYZ	xyz(17.1510, 10.3700, 3.0176)
Luminance	0.1037 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63027 #279DA6

analogous

#A6275D #A63027 #A66F27

triadic

#A63027 #27A630 #3027A6

tetradic

#A63027 #5DA627 #279DA6 #6F27A6

square

#A63027 #5DA627 #279DA6 #6F27A6

split-complementary

#A63027 #27A66F #275DA6

monochromatic

#431310 #74221B #A63027 #D1443A #DC736B

Accessibility & contrast

On white

6.83

#A63027 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#A63027 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63027

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63027	#FFFFFF	#000000	##FFFFFF
##A63027	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)

#524A25

Deuteranopia (green-blind)

#706423

Tritanopia (blue-blind)

#B7022F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a63027;
/* rgb */ color: rgb(166, 48, 39);
/* oklch */ color: oklch(48.8% 0.156 28.5);

Tailwind

colors: {
  custom: {
    50: '#c97062',
    500: '#a63027',
    950: '#000000',
  },
}

SCSS

$custom: #a63027;
$custom-light: #c97062;
$custom-dark: #000000;

JSON

{
  "hex": "#a63027",
  "rgb": {
    "r": 166,
    "g": 48,
    "b": 39
  },
  "hsl": {
    "h": 4.252,
    "s": 61.951,
    "l": 40.196
  },
  "oklch": {
    "l": 0.4881,
    "c": 0.15571,
    "h": 28.5
  },
  "luminance": 0.10367
}

Semantic roles & 50–950 ramp

primary

#A63027

secondary

#66BCC3

accent

#DAE543

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150805

muted

#837B79

Preview Lab

Preview with #A63027

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

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