#B1403A#B1403A

#B1403A is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.8% C 0.149 H 26.5°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#B1403A
RGB	rgb(177, 64, 58)
HSL	hsl(3, 51%, 46%)
HSV	hsv(3, 67%, 69%)
CMYK	cmyk(0%, 63.8%, 67.2%, 30.6%)
CIE-LAB	lab(43.24, 45.61, 28.30)
CIE-LCH	lch(43.24, 53.67, 31.82°)
OKLab	oklab(52.82% 0.1331 0.0663)
OKLCH	oklch(52.82% 0.149 26.5)
XYZ	xyz(20.7307, 13.3222, 5.4820)
Luminance	0.1332 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1403A #3AABB1

analogous

#B13A6F #B1403A #B17B3A

triadic

#B1403A #3AB140 #403AB1

tetradic

#B1403A #6FB13A #3AABB1 #7B3AB1

square

#B1403A #6FB13A #3AABB1 #7B3AB1

split-complementary

#B1403A #3AB17B #3A6FB1

monochromatic

#551F1C #832F2B #B1403A #CA635E #D9908C

Accessibility & contrast

On white

5.73

#B1403A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B1403A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B1403A

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1403A	#FFFFFF	#000000	##FFFFFF
##B1403A	1.00	5.73	3.66	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5739

Deuteranopia (green-blind)

#7A6F37

Tritanopia (blue-blind)

#C2263F

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b1403a;
/* rgb */ color: rgb(177, 64, 58);
/* oklch */ color: oklch(52.8% 0.149 26.5);

Tailwind

colors: {
  custom: {
    50: '#cf7a70',
    500: '#b1403a',
    950: '#000000',
  },
}

SCSS

$custom: #b1403a;
$custom-light: #cf7a70;
$custom-dark: #000000;

JSON

{
  "hex": "#b1403a",
  "rgb": {
    "r": 177,
    "g": 64,
    "b": 58
  },
  "hsl": {
    "h": 3.025,
    "s": 50.638,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52822,
    "c": 0.14864,
    "h": 26.5
  },
  "luminance": 0.13319
}

Semantic roles & 50–950 ramp

primary

#B1403A

secondary

#83C1C4

accent

#D3DA4E

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150A07

muted

#837C7A

Preview Lab

Preview with #B1403A

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

Preview Lab → · Contrast checker → · Palette generator →