#B03F30#B03F30

#B03F30 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.4% C 0.150 H 30.4°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#B03F30
RGB	rgb(176, 63, 48)
HSL	hsl(7, 57%, 44%)
HSV	hsv(7, 73%, 69%)
CMYK	cmyk(0%, 64.2%, 72.7%, 31%)
CIE-LAB	lab(42.77, 45.17, 33.53)
CIE-LCH	lch(42.77, 56.25, 36.58°)
OKLab	oklab(52.38% 0.1298 0.0761)
OKLCH	oklch(52.38% 0.15 30.4)
XYZ	xyz(20.2176, 13.0014, 4.2406)
Luminance	0.1300 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03F30 #30A1B0

analogous

#B03061 #B03F30 #B07F30

triadic

#B03F30 #30B03F #3F30B0

tetradic

#B03F30 #61B030 #30A1B0 #7F30B0

square

#B03F30 #61B030 #30A1B0 #7F30B0

split-complementary

#B03F30 #30B07F #3061B0

monochromatic

#501D16 #802E23 #B03F30 #CF5D4E #DC897E

Accessibility & contrast

On white

5.83

#B03F30 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B03F30 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03F30

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03F30	#FFFFFF	#000000	##FFFFFF
##B03F30	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E552E

Deuteranopia (green-blind)

#7A6E2C

Tritanopia (blue-blind)

#C1233C

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b03f30;
/* rgb */ color: rgb(176, 63, 48);
/* oklch */ color: oklch(52.4% 0.150 30.4);

Tailwind

colors: {
  custom: {
    50: '#cf7969',
    500: '#b03f30',
    950: '#000000',
  },
}

SCSS

$custom: #b03f30;
$custom-light: #cf7969;
$custom-dark: #000000;

JSON

{
  "hex": "#b03f30",
  "rgb": {
    "r": 176,
    "g": 63,
    "b": 48
  },
  "hsl": {
    "h": 7.031,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.52384,
    "c": 0.15042,
    "h": 30.4
  },
  "luminance": 0.12999
}

Semantic roles & 50–950 ramp

primary

#B03F30

secondary

#77BCC5

accent

#CEE047

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B03F30

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

Preview Lab → · Contrast checker → · Palette generator →