#B63B30#B63B30

#B63B30 is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.9% C 0.161 H 28.8°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#B63B30
RGB	rgb(182, 59, 48)
HSL	hsl(5, 58%, 45%)
HSV	hsv(5, 74%, 71%)
CMYK	cmyk(0%, 67.6%, 73.6%, 28.6%)
CIE-LAB	lab(43.20, 48.98, 34.30)
CIE-LCH	lch(43.20, 59.80, 35.00°)
OKLab	oklab(52.91% 0.141 0.0774)
OKLCH	oklch(52.91% 0.161 28.8)
XYZ	xyz(21.3912, 13.2895, 4.2345)
Luminance	0.1329 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63B30 #30ABB6

analogous

#B63068 #B63B30 #B67E30

triadic

#B63B30 #30B63B #3B30B6

tetradic

#B63B30 #68B630 #30ABB6 #7E30B6

square

#B63B30 #68B630 #30ABB6 #7E30B6

split-complementary

#B63B30 #30B67E #3068B6

monochromatic

#551C16 #862B23 #B63B30 #D15C52 #DE8A82

Accessibility & contrast

On white

5.74

#B63B30 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B63B30 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63B30

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63B30	#FFFFFF	#000000	##FFFFFF
##B63B30	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E552E

Deuteranopia (green-blind)

#7C702C

Tritanopia (blue-blind)

#C81739

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63b30;
/* rgb */ color: rgb(182, 59, 48);
/* oklch */ color: oklch(52.9% 0.161 28.8);

Tailwind

colors: {
  custom: {
    50: '#d47869',
    500: '#b63b30',
    950: '#000000',
  },
}

SCSS

$custom: #b63b30;
$custom-light: #d47869;
$custom-dark: #000000;

JSON

{
  "hex": "#b63b30",
  "rgb": {
    "r": 182,
    "g": 59,
    "b": 48
  },
  "hsl": {
    "h": 4.925,
    "s": 58.261,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52908,
    "c": 0.16085,
    "h": 28.8
  },
  "luminance": 0.13286
}

Semantic roles & 50–950 ramp

primary

#B63B30

secondary

#7BC1C7

accent

#D5E146

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63B30

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

Preview Lab → · Contrast checker → · Palette generator →