#B63128#B63128

#B63128 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.7% C 0.171 H 28.5°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#B63128
RGB	rgb(182, 49, 40)
HSL	hsl(4, 64%, 44%)
HSV	hsv(4, 78%, 71%)
CMYK	cmyk(0%, 73.1%, 78%, 28.6%)
CIE-LAB	lab(41.69, 52.54, 37.18)
CIE-LCH	lch(41.69, 64.37, 35.29°)
OKLab	oklab(51.75% 0.1505 0.0816)
OKLCH	oklch(51.75% 0.171 28.5)
XYZ	xyz(20.7752, 12.2981, 3.2869)
Luminance	0.1230 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63128 #28ADB6

analogous

#B62866 #B63128 #B67828

triadic

#B63128 #28B631 #3128B6

tetradic

#B63128 #66B628 #28ADB6 #7828B6

square

#B63128 #66B628 #28ADB6 #7828B6

split-complementary

#B63128 #28B678 #2866B6

monochromatic

#521612 #84231D #B63128 #D64E45 #E17E77

Accessibility & contrast

On white

6.07

#B63128 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B63128 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63128

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63128	#FFFFFF	#000000	##FFFFFF
##B63128	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595026

Deuteranopia (green-blind)

#7A6D22

Tritanopia (blue-blind)

#C90030

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b63128;
/* rgb */ color: rgb(182, 49, 40);
/* oklch */ color: oklch(51.7% 0.171 28.5);

Tailwind

colors: {
  custom: {
    50: '#d57363',
    500: '#b63128',
    950: '#000000',
  },
}

SCSS

$custom: #b63128;
$custom-light: #d57363;
$custom-dark: #000000;

JSON

{
  "hex": "#b63128",
  "rgb": {
    "r": 182,
    "g": 49,
    "b": 40
  },
  "hsl": {
    "h": 3.803,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.51749,
    "c": 0.17123,
    "h": 28.5
  },
  "luminance": 0.12295
}

Semantic roles & 50–950 ramp

primary

#B63128

secondary

#71C3C9

accent

#DCE741

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B63128

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

Preview Lab → · Contrast checker → · Palette generator →