#B33743#B33743

#B33743 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.3% C 0.159 H 19.2°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#B33743
RGB	rgb(179, 55, 67)
HSL	hsl(354, 53%, 46%)
HSV	hsv(354, 69%, 70%)
CMYK	cmyk(0%, 69.3%, 62.6%, 29.8%)
CIE-LAB	lab(42.34, 50.65, 21.79)
CIE-LCH	lch(42.34, 55.14, 23.28°)
OKLab	oklab(52.26% 0.1505 0.0526)
OKLCH	oklch(52.26% 0.159 19.2)
XYZ	xyz(20.9718, 12.7243, 6.6608)
Luminance	0.1272 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33743 #37B3A7

analogous

#B33781 #B33743 #B36937

triadic

#B33743 #43B337 #3743B3

tetradic

#B33743 #81B337 #37B3A7 #6937B3

square

#B33743 #81B337 #37B3A7 #6937B3

split-complementary

#B33743 #37B369 #3781B3

monochromatic

#551A20 #842931 #B33743 #CD5B66 #DB8A91

Accessibility & contrast

On white

5.93

#B33743 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B33743 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33743

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33743	#FFFFFF	#000000	##FFFFFF
##B33743	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585343

Deuteranopia (green-blind)

#776E40

Tritanopia (blue-blind)

#C4173C

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b33743;
/* rgb */ color: rgb(179, 55, 67);
/* oklch */ color: oklch(52.3% 0.159 19.2);

Tailwind

colors: {
  custom: {
    50: '#d07677',
    500: '#b33743',
    950: '#000000',
  },
}

SCSS

$custom: #b33743;
$custom-light: #d07677;
$custom-dark: #000000;

JSON

{
  "hex": "#b33743",
  "rgb": {
    "r": 179,
    "g": 55,
    "b": 67
  },
  "hsl": {
    "h": 354.194,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52263,
    "c": 0.15944,
    "h": 19.2
  },
  "luminance": 0.12721
}

Semantic roles & 50–950 ramp

primary

#B33743

secondary

#81C5BE

accent

#DCCE4B

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B33743

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

Preview Lab → · Contrast checker → · Palette generator →