#A63A24#A63A24

#A63A24 is a mid, vivid red. Relative luminance 0.113; OKLCH L 49.9% C 0.147 H 33.3°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#A63A24
RGB	rgb(166, 58, 36)
HSL	hsl(10, 64%, 40%)
HSV	hsv(10, 78%, 65%)
CMYK	cmyk(0%, 65.1%, 78.3%, 34.9%)
CIE-LAB	lab(40.02, 43.30, 36.73)
CIE-LCH	lch(40.02, 56.79, 40.31°)
OKLab	oklab(49.94% 0.1227 0.0807)
OKLCH	oklch(49.94% 0.147 33.3)
XYZ	xyz(17.5593, 11.2630, 2.9181)
Luminance	0.1126 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63A24 #2490A6

analogous

#A6244F #A63A24 #A67B24

triadic

#A63A24 #24A63A #3A24A6

tetradic

#A63A24 #4FA624 #2490A6 #7B24A6

square

#A63A24 #4FA624 #2490A6 #7B24A6

split-complementary

#A63A24 #24A67B #244FA6

monochromatic

#41170E #742819 #A63A24 #D34F34 #DE7B66

Accessibility & contrast

On white

6.46

#A63A24 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#A63A24 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63A24

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63A24	#FFFFFF	#000000	##FFFFFF
##A63A24	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594F21

Deuteranopia (green-blind)

#736720

Tritanopia (blue-blind)

#B71D36

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #a63a24;
/* rgb */ color: rgb(166, 58, 36);
/* oklch */ color: oklch(49.9% 0.147 33.3);

Tailwind

colors: {
  custom: {
    50: '#c87560',
    500: '#a63a24',
    950: '#000000',
  },
}

SCSS

$custom: #a63a24;
$custom-light: #c87560;
$custom-dark: #000000;

JSON

{
  "hex": "#a63a24",
  "rgb": {
    "r": 166,
    "g": 58,
    "b": 36
  },
  "hsl": {
    "h": 10.154,
    "s": 64.356,
    "l": 39.608
  },
  "oklch": {
    "l": 0.49941,
    "c": 0.14684,
    "h": 33.3
  },
  "luminance": 0.1126
}

Semantic roles & 50–950 ramp

primary

#A63A24

secondary

#62B3C4

accent

#CBE740

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150905

muted

#837B79

Preview Lab

Preview with #A63A24

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

Preview Lab → · Contrast checker → · Palette generator →