#A63B24#A63B24

#A63B24 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.1% C 0.146 H 33.8°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#A63B24
RGB	rgb(166, 59, 36)
HSL	hsl(11, 64%, 40%)
HSV	hsv(11, 78%, 65%)
CMYK	cmyk(0%, 64.5%, 78.3%, 34.9%)
CIE-LAB	lab(40.19, 42.85, 36.91)
CIE-LCH	lch(40.19, 56.56, 40.74°)
OKLab	oklab(50.07% 0.1213 0.0811)
OKLCH	oklch(50.07% 0.146 33.8)
XYZ	xyz(17.6102, 11.3648, 2.9351)
Luminance	0.1136 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B24 #248FA6

analogous

#A6244E #A63B24 #A67C24

triadic

#A63B24 #24A63B #3B24A6

tetradic

#A63B24 #4EA624 #248FA6 #7C24A6

square

#A63B24 #4EA624 #248FA6 #7C24A6

split-complementary

#A63B24 #24A67C #244EA6

monochromatic

#41170E #742919 #A63B24 #D35034 #DE7C66

Accessibility & contrast

On white

6.42

#A63B24 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#A63B24 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B24

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B24	#FFFFFF	#000000	##FFFFFF
##A63B24	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595021

Deuteranopia (green-blind)

#746820

Tritanopia (blue-blind)

#B71F36

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b24;
/* rgb */ color: rgb(166, 59, 36);
/* oklch */ color: oklch(50.1% 0.146 33.8);

Tailwind

colors: {
  custom: {
    50: '#c87660',
    500: '#a63b24',
    950: '#000000',
  },
}

SCSS

$custom: #a63b24;
$custom-light: #c87660;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b24",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 36
  },
  "hsl": {
    "h": 10.615,
    "s": 64.356,
    "l": 39.608
  },
  "oklch": {
    "l": 0.50068,
    "c": 0.14588,
    "h": 33.8
  },
  "luminance": 0.11362
}

Semantic roles & 50–950 ramp

primary

#A63B24

secondary

#62B2C4

accent

#CAE740

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150905

muted

#837B79

Preview Lab

Preview with #A63B24

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

Preview Lab → · Contrast checker → · Palette generator →