#B23F3F#B23F3F

#B23F3F is a mid, vivid red. Relative luminance 0.134; OKLCH L 52.9% C 0.150 H 23.8°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#B23F3F
RGB	rgb(178, 63, 63)
HSL	hsl(0, 48%, 47%)
HSV	hsv(0, 65%, 70%)
CMYK	cmyk(0%, 64.6%, 64.6%, 30.2%)
CIE-LAB	lab(43.33, 46.70, 25.45)
CIE-LCH	lch(43.33, 53.19, 28.59°)
OKLab	oklab(52.95% 0.1374 0.0605)
OKLCH	oklch(52.95% 0.15 23.8)
XYZ	xyz(21.0369, 13.3818, 6.1768)
Luminance	0.1338 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23F3F #3FB2B2

analogous

#B23F79 #B23F3F #B2793F

triadic

#B23F3F #3FB23F #3F3FB2

tetradic

#B23F3F #79B23F #3FB2B2 #793FB2

square

#B23F3F #79B23F #3FB2B2 #793FB2

split-complementary

#B23F3F #3FB279 #3F79B2

monochromatic

#581F1F #852F2F #B23F3F #C96666 #D99393

Accessibility & contrast

On white

5.71

#B23F3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#B23F3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23F3F

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23F3F	#FFFFFF	#000000	##FFFFFF
##B23F3F	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D573E

Deuteranopia (green-blind)

#7A6F3C

Tritanopia (blue-blind)

#C32540

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b23f3f;
/* rgb */ color: rgb(178, 63, 63);
/* oklch */ color: oklch(52.9% 0.150 23.8);

Tailwind

colors: {
  custom: {
    50: '#d07a74',
    500: '#b23f3f',
    950: '#000000',
  },
}

SCSS

$custom: #b23f3f;
$custom-light: #d07a74;
$custom-dark: #000000;

JSON

{
  "hex": "#b23f3f",
  "rgb": {
    "r": 178,
    "g": 63,
    "b": 63
  },
  "hsl": {
    "h": 0,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.52947,
    "c": 0.15009,
    "h": 23.8
  },
  "luminance": 0.13379
}

Semantic roles & 50–950 ramp

primary

#B23F3F

secondary

#89C4C4

accent

#D7D750

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150A08

muted

#837C7B

Preview Lab

Preview with #B23F3F

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

Preview Lab → · Contrast checker → · Palette generator →