#B23B30#B23B30

#B23B30 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.2% C 0.157 H 28.8°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#B23B30
RGB	rgb(178, 59, 48)
HSL	hsl(5, 58%, 44%)
HSV	hsv(5, 73%, 70%)
CMYK	cmyk(0%, 66.9%, 73%, 30.2%)
CIE-LAB	lab(42.47, 47.61, 33.29)
CIE-LCH	lch(42.47, 58.10, 34.96°)
OKLab	oklab(52.23% 0.1372 0.0754)
OKLCH	oklch(52.23% 0.157 28.8)
XYZ	xyz(20.4598, 12.8093, 4.1908)
Luminance	0.1281 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23B30 #30A7B2

analogous

#B23066 #B23B30 #B27C30

triadic

#B23B30 #30B23B #3B30B2

tetradic

#B23B30 #66B230 #30A7B2 #7C30B2

square

#B23B30 #66B230 #30A7B2 #7C30B2

split-complementary

#B23B30 #30B27C #3066B2

monochromatic

#521B16 #822B23 #B23B30 #D05A50 #DD8880

Accessibility & contrast

On white

5.90

#B23B30 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B23B30 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23B30

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23B30	#FFFFFF	#000000	##FFFFFF
##B23B30	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C542E

Deuteranopia (green-blind)

#7A6E2C

Tritanopia (blue-blind)

#C41A39

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b23b30;
/* rgb */ color: rgb(178, 59, 48);
/* oklch */ color: oklch(52.2% 0.157 28.8);

Tailwind

colors: {
  custom: {
    50: '#d17769',
    500: '#b23b30',
    950: '#000000',
  },
}

SCSS

$custom: #b23b30;
$custom-light: #d17769;
$custom-dark: #000000;

JSON

{
  "hex": "#b23b30",
  "rgb": {
    "r": 178,
    "g": 59,
    "b": 48
  },
  "hsl": {
    "h": 5.077,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.52232,
    "c": 0.15656,
    "h": 28.8
  },
  "luminance": 0.12806
}

Semantic roles & 50–950 ramp

primary

#B23B30

secondary

#78BFC6

accent

#D4E147

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B23B30

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

Preview Lab → · Contrast checker → · Palette generator →