#A63A27#A63A27

#A63A27 is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.0% C 0.146 H 32.3°. Best body text is #FFFFFF at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#A63A27
RGB	rgb(166, 58, 39)
HSL	hsl(9, 62%, 40%)
HSV	hsv(9, 77%, 65%)
CMYK	cmyk(0%, 65.1%, 76.5%, 34.9%)
CIE-LAB	lab(40.05, 43.43, 35.12)
CIE-LCH	lch(40.05, 55.85, 38.96°)
OKLab	oklab(49.98% 0.1236 0.078)
OKLCH	oklch(49.98% 0.146 32.3)
XYZ	xyz(17.6071, 11.2821, 3.1696)
Luminance	0.1128 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A27 #2793A6

analogous

#A62754 #A63A27 #A67927

triadic

#A63A27 #27A63A #3A27A6

tetradic

#A63A27 #54A627 #2793A6 #7927A6

square

#A63A27 #54A627 #2793A6 #7927A6

split-complementary

#A63A27 #27A679 #2754A6

monochromatic

#431710 #74291B #A63A27 #D1503A #DC7C6B

Accessibility & contrast

On white

6.45

#A63A27 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#A63A27 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A27

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A27	#FFFFFF	#000000	##FFFFFF
##A63A27	1.00	6.45	3.26	6.45
#FFFFFF	6.45	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584F24

Deuteranopia (green-blind)

#736723

Tritanopia (blue-blind)

#B71D36

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63a27;
/* rgb */ color: rgb(166, 58, 39);
/* oklch */ color: oklch(50.0% 0.146 32.3);

Tailwind

colors: {
  custom: {
    50: '#c87562',
    500: '#a63a27',
    950: '#000000',
  },
}

SCSS

$custom: #a63a27;
$custom-light: #c87562;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a27",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 39
  },
  "hsl": {
    "h": 8.976,
    "s": 61.951,
    "l": 40.196
  },
  "oklch": {
    "l": 0.49975,
    "c": 0.1462,
    "h": 32.3
  },
  "luminance": 0.1128
}

Semantic roles & 50–950 ramp

primary

#A63A27

secondary

#66B5C3

accent

#CDE543

background

#FDF7F5

surface

#FAEDEA

border

#D3C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #A63A27

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

Preview Lab → · Contrast checker → · Palette generator →