#B21D19#B21D19

#B21D19 is a mid, vivid red. Relative luminance 0.104; OKLCH L 49.3% C 0.184 H 28.2°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#B21D19
RGB	rgb(178, 29, 25)
HSL	hsl(2, 75%, 40%)
HSV	hsv(2, 86%, 70%)
CMYK	cmyk(0%, 83.7%, 86%, 30.2%)
CIE-LAB	lab(38.58, 56.98, 41.95)
CIE-LCH	lch(38.58, 70.75, 36.36°)
OKLab	oklab(49.25% 0.162 0.087)
OKLCH	oklch(49.25% 0.184 28.2)
XYZ	xyz(18.9774, 10.4171, 1.9310)
Luminance	0.1041 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B21D19 #19AEB2

analogous

#B21961 #B21D19 #B26A19

triadic

#B21D19 #19B21D #1D19B2

tetradic

#B21D19 #61B219 #19AEB2 #6A19B2

square

#B21D19 #61B219 #19AEB2 #6A19B2

split-complementary

#B21D19 #19B26A #1961B2

monochromatic

#470C0A #7C1411 #B21D19 #E12C27 #E8615D

Accessibility & contrast

On white

6.81

#B21D19 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#B21D19 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B21D19

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B21D19	#FFFFFF	#000000	##FFFFFF
##B21D19	1.00	6.81	3.08	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4616

Deuteranopia (green-blind)

#73660F

Tritanopia (blue-blind)

#C5001F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b21d19;
/* rgb */ color: rgb(178, 29, 25);
/* oklch */ color: oklch(49.3% 0.184 28.2);

Tailwind

colors: {
  custom: {
    50: '#d36a58',
    500: '#b21d19',
    950: '#000000',
  },
}

SCSS

$custom: #b21d19;
$custom-light: #d36a58;
$custom-dark: #000000;

JSON

{
  "hex": "#b21d19",
  "rgb": {
    "r": 178,
    "g": 29,
    "b": 25
  },
  "hsl": {
    "h": 1.569,
    "s": 75.369,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49254,
    "c": 0.18385,
    "h": 28.2
  },
  "luminance": 0.10414
}

Semantic roles & 50–950 ramp

primary

#B21D19

secondary

#5BC9CC

accent

#EDF236

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160703

muted

#847A78

Preview Lab

Preview with #B21D19

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

Preview Lab → · Contrast checker → · Palette generator →