#A63B35#A63B35

#A63B35 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.3% C 0.142 H 26.7°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#A63B35
RGB	rgb(166, 59, 53)
HSL	hsl(3, 52%, 43%)
HSV	hsv(3, 68%, 65%)
CMYK	cmyk(0%, 64.5%, 68.1%, 34.9%)
CIE-LAB	lab(40.40, 43.67, 27.38)
CIE-LCH	lch(40.40, 51.55, 32.08°)
OKLab	oklab(50.3% 0.1273 0.0639)
OKLCH	oklch(50.3% 0.142 26.7)
XYZ	xyz(17.9343, 11.4944, 4.6417)
Luminance	0.1149 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B35 #35A0A6

analogous

#A63567 #A63B35 #A67335

triadic

#A63B35 #35A63B #3B35A6

tetradic

#A63B35 #67A635 #35A0A6 #7335A6

square

#A63B35 #67A635 #35A0A6 #7335A6

split-complementary

#A63B35 #35A673 #3567A6

monochromatic

#491A17 #782B26 #A63B35 #C75751 #D6847F

Accessibility & contrast

On white

6.37

#A63B35 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#A63B35 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B35

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B35	#FFFFFF	#000000	##FFFFFF
##A63B35	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585134

Deuteranopia (green-blind)

#726832

Tritanopia (blue-blind)

#B6223A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b35;
/* rgb */ color: rgb(166, 59, 53);
/* oklch */ color: oklch(50.3% 0.142 26.7);

Tailwind

colors: {
  custom: {
    50: '#c7766c',
    500: '#a63b35',
    950: '#000000',
  },
}

SCSS

$custom: #a63b35;
$custom-light: #c7766c;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b35",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 53
  },
  "hsl": {
    "h": 3.186,
    "s": 51.598,
    "l": 42.941
  },
  "oklch": {
    "l": 0.50296,
    "c": 0.14242,
    "h": 26.7
  },
  "luminance": 0.11492
}

Semantic roles & 50–950 ramp

primary

#A63B35

secondary

#77BCBF

accent

#D3DB4D

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140907

muted

#837B7A

Preview Lab

Preview with #A63B35

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

Preview Lab → · Contrast checker → · Palette generator →