#B7403A#B7403A

#B7403A is a mid, vivid red. Relative luminance 0.140; OKLCH L 53.8% C 0.155 H 26.5°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#B7403A
RGB	rgb(183, 64, 58)
HSL	hsl(3, 52%, 47%)
HSV	hsv(3, 68%, 72%)
CMYK	cmyk(0%, 65%, 68.3%, 28.2%)
CIE-LAB	lab(44.29, 47.70, 29.81)
CIE-LCH	lch(44.29, 56.25, 32.00°)
OKLab	oklab(53.81% 0.1389 0.0694)
OKLCH	oklch(53.81% 0.155 26.5)
XYZ	xyz(22.1278, 14.0427, 5.5475)
Luminance	0.1404 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B7403A #3AB1B7

analogous

#B73A73 #B7403A #B77F3A

triadic

#B7403A #3AB740 #403AB7

tetradic

#B7403A #73B73A #3AB1B7 #7F3AB7

square

#B7403A #73B73A #3AB1B7 #7F3AB7

split-complementary

#B7403A #3AB77F #3A73B7

monochromatic

#5A1F1D #89302B #B7403A #CD6661 #DC9390

Accessibility & contrast

On white

5.51

#B7403A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#B7403A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B7403A

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B7403A	#FFFFFF	#000000	##FFFFFF
##B7403A	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605838

Deuteranopia (green-blind)

#7E7237

Tritanopia (blue-blind)

#C92340

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #b7403a;
/* rgb */ color: rgb(183, 64, 58);
/* oklch */ color: oklch(53.8% 0.155 26.5);

Tailwind

colors: {
  custom: {
    50: '#d47b70',
    500: '#b7403a',
    950: '#000000',
  },
}

SCSS

$custom: #b7403a;
$custom-light: #d47b70;
$custom-dark: #000000;

JSON

{
  "hex": "#b7403a",
  "rgb": {
    "r": 183,
    "g": 64,
    "b": 58
  },
  "hsl": {
    "h": 2.88,
    "s": 51.867,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53808,
    "c": 0.15527,
    "h": 26.5
  },
  "luminance": 0.1404
}

Semantic roles & 50–950 ramp

primary

#B7403A

secondary

#86C3C7

accent

#D4DB4C

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160A07

muted

#847C7A

Preview Lab

Preview with #B7403A

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

Preview Lab → · Contrast checker → · Palette generator →