#B5403A#B5403A

#B5403A is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.5% C 0.153 H 26.5°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#B5403A
RGB	rgb(181, 64, 58)
HSL	hsl(3, 51%, 47%)
HSV	hsv(3, 68%, 71%)
CMYK	cmyk(0%, 64.6%, 68%, 29%)
CIE-LAB	lab(43.94, 47.01, 29.31)
CIE-LCH	lch(43.94, 55.39, 31.94°)
OKLab	oklab(53.48% 0.137 0.0683)
OKLCH	oklch(53.48% 0.153 26.5)
XYZ	xyz(21.6554, 13.7991, 5.5253)
Luminance	0.1380 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5403A #3AAFB5

analogous

#B53A72 #B5403A #B57E3A

triadic

#B5403A #3AB540 #403AB5

tetradic

#B5403A #72B53A #3AAFB5 #7E3AB5

square

#B5403A #72B53A #3AAFB5 #7E3AB5

split-complementary

#B5403A #3AB57E #3A72B5

monochromatic

#581F1C #87302B #B5403A #CC6560 #DB928E

Accessibility & contrast

On white

5.59

#B5403A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#B5403A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5403A

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5403A	#FFFFFF	#000000	##FFFFFF
##B5403A	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5839

Deuteranopia (green-blind)

#7D7137

Tritanopia (blue-blind)

#C72440

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b5403a;
/* rgb */ color: rgb(181, 64, 58);
/* oklch */ color: oklch(53.5% 0.153 26.5);

Tailwind

colors: {
  custom: {
    50: '#d27b70',
    500: '#b5403a',
    950: '#000000',
  },
}

SCSS

$custom: #b5403a;
$custom-light: #d27b70;
$custom-dark: #000000;

JSON

{
  "hex": "#b5403a",
  "rgb": {
    "r": 181,
    "g": 64,
    "b": 58
  },
  "hsl": {
    "h": 2.927,
    "s": 51.464,
    "l": 46.863
  },
  "oklch": {
    "l": 0.53479,
    "c": 0.15307,
    "h": 26.5
  },
  "luminance": 0.13796
}

Semantic roles & 50–950 ramp

primary

#B5403A

secondary

#85C3C6

accent

#D4DB4D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150A07

muted

#837C7A

Preview Lab

Preview with #B5403A

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

Preview Lab → · Contrast checker → · Palette generator →