#B03128#B03128

#B03128 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.7% C 0.165 H 28.5°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#B03128
RGB	rgb(176, 49, 40)
HSL	hsl(4, 63%, 42%)
HSV	hsv(4, 77%, 69%)
CMYK	cmyk(0%, 72.2%, 77.3%, 31%)
CIE-LAB	lab(40.55, 50.60, 35.63)
CIE-LCH	lch(40.55, 61.89, 35.15°)
OKLab	oklab(50.69% 0.1451 0.0787)
OKLCH	oklch(50.69% 0.165 28.5)
XYZ	xyz(19.3881, 11.5829, 3.2219)
Luminance	0.1158 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03128 #28A7B0

analogous

#B02863 #B03128 #B07528

triadic

#B03128 #28B031 #3128B0

tetradic

#B03128 #63B028 #28A7B0 #7528B0

square

#B03128 #63B028 #28A7B0 #7528B0

split-complementary

#B03128 #28B075 #2863B0

monochromatic

#4C1511 #7E231D #B03128 #D44B41 #DF7A73

Accessibility & contrast

On white

6.33

#B03128 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#B03128 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03128

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03128	#FFFFFF	#000000	##FFFFFF
##B03128	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564E26

Deuteranopia (green-blind)

#766A23

Tritanopia (blue-blind)

#C20030

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b03128;
/* rgb */ color: rgb(176, 49, 40);
/* oklch */ color: oklch(50.7% 0.165 28.5);

Tailwind

colors: {
  custom: {
    50: '#d07263',
    500: '#b03128',
    950: '#000000',
  },
}

SCSS

$custom: #b03128;
$custom-light: #d07263;
$custom-dark: #000000;

JSON

{
  "hex": "#b03128",
  "rgb": {
    "r": 176,
    "g": 49,
    "b": 40
  },
  "hsl": {
    "h": 3.971,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.5069,
    "c": 0.16509,
    "h": 28.5
  },
  "luminance": 0.1158
}

Semantic roles & 50–950 ramp

primary

#B03128

secondary

#6DC1C6

accent

#DBE642

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160805

muted

#847B79

Preview Lab

Preview with #B03128

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

Preview Lab → · Contrast checker → · Palette generator →