#A63B30#A63B30

#A63B30 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.2% C 0.143 H 29.0°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#A63B30
RGB	rgb(166, 59, 48)
HSL	hsl(6, 55%, 42%)
HSV	hsv(6, 71%, 65%)
CMYK	cmyk(0%, 64.5%, 71.1%, 34.9%)
CIE-LAB	lab(40.33, 43.40, 30.26)
CIE-LCH	lch(40.33, 52.91, 34.89°)
OKLab	oklab(50.22% 0.1254 0.0695)
OKLCH	oklch(50.22% 0.143 29)
XYZ	xyz(17.8252, 11.4508, 4.0673)
Luminance	0.1145 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A63B30 #309BA6

analogous

#A63060 #A63B30 #A67630

triadic

#A63B30 #30A63B #3B30A6

tetradic

#A63B30 #60A630 #309BA6 #7630A6

square

#A63B30 #60A630 #309BA6 #7630A6

split-complementary

#A63B30 #30A676 #3060A6

monochromatic

#471915 #772A22 #A63B30 #CA5549 #D88178

Accessibility & contrast

On white

6.38

#A63B30 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#A63B30 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A63B30

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A63B30	#FFFFFF	#000000	##FFFFFF
##A63B30	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58502E

Deuteranopia (green-blind)

#73682D

Tritanopia (blue-blind)

#B62139

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a63b30;
/* rgb */ color: rgb(166, 59, 48);
/* oklch */ color: oklch(50.2% 0.143 29.0);

Tailwind

colors: {
  custom: {
    50: '#c77669',
    500: '#a63b30',
    950: '#000000',
  },
}

SCSS

$custom: #a63b30;
$custom-light: #c77669;
$custom-dark: #000000;

JSON

{
  "hex": "#a63b30",
  "rgb": {
    "r": 166,
    "g": 59,
    "b": 48
  },
  "hsl": {
    "h": 5.593,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.5022,
    "c": 0.14333,
    "h": 29
  },
  "luminance": 0.11448
}

Semantic roles & 50–950 ramp

primary

#A63B30

secondary

#71B9C0

accent

#D1DE49

background

#FDF7F6

surface

#FAEDEB

border

#D3C8C6

text

#140906

muted

#837B7A

Preview Lab

Preview with #A63B30

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

Preview Lab → · Contrast checker → · Palette generator →