#B7383B#B7383B

#B7383B is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.9% C 0.163 H 23.4°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#B7383B
RGB	rgb(183, 56, 59)
HSL	hsl(359, 53%, 47%)
HSV	hsv(359, 69%, 72%)
CMYK	cmyk(0%, 69.4%, 67.8%, 28.2%)
CIE-LAB	lab(43.08, 51.08, 27.75)
CIE-LCH	lch(43.08, 58.13, 28.51°)
OKLab	oklab(52.91% 0.1498 0.0649)
OKLCH	oklch(52.91% 0.163 23.4)
XYZ	xyz(21.7343, 13.2145, 5.5430)
Luminance	0.1321 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B7383B #38B7B4

analogous

#B7387A #B7383B #B77538

triadic

#B7383B #3BB738 #383BB7

tetradic

#B7383B #7AB738 #38B7B4 #7538B7

square

#B7383B #7AB738 #38B7B4 #7538B7

split-complementary

#B7383B #38B775 #387AB7

monochromatic

#591B1D #882A2C #B7383B #CE5E61 #DC8D8F

Accessibility & contrast

On white

5.77

#B7383B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#B7383B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B7383B

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B7383B	#FFFFFF	#000000	##FFFFFF
##B7383B	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B543A

Deuteranopia (green-blind)

#7B7037

Tritanopia (blue-blind)

#C9123A

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b7383b;
/* rgb */ color: rgb(183, 56, 59);
/* oklch */ color: oklch(52.9% 0.163 23.4);

Tailwind

colors: {
  custom: {
    50: '#d47771',
    500: '#b7383b',
    950: '#000000',
  },
}

SCSS

$custom: #b7383b;
$custom-light: #d47771;
$custom-dark: #000000;

JSON

{
  "hex": "#b7383b",
  "rgb": {
    "r": 183,
    "g": 56,
    "b": 59
  },
  "hsl": {
    "h": 358.583,
    "s": 53.138,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52907,
    "c": 0.16326,
    "h": 23.4
  },
  "luminance": 0.13211
}

Semantic roles & 50–950 ramp

primary

#B7383B

secondary

#84C7C5

accent

#DDD94B

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B7383B

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

Preview Lab → · Contrast checker → · Palette generator →