#B42B15#B42B15

#B42B15 is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.7% C 0.177 H 31.8°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#B42B15
RGB	rgb(180, 43, 21)
HSL	hsl(8, 79%, 39%)
HSV	hsv(8, 88%, 71%)
CMYK	cmyk(0%, 76.1%, 88.3%, 29.4%)
CIE-LAB	lab(40.39, 53.46, 45.51)
CIE-LCH	lch(40.39, 70.20, 40.41°)
OKLab	oklab(50.66% 0.1501 0.0932)
OKLCH	oklch(50.66% 0.177 31.8)
XYZ	xyz(19.8241, 11.4884, 1.8830)
Luminance	0.1148 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42B15 #159EB4

analogous

#B4154F #B42B15 #B47B15

triadic

#B42B15 #15B42B #2B15B4

tetradic

#B42B15 #4FB415 #159EB4 #7B15B4

square

#B42B15 #4FB415 #159EB4 #7B15B4

split-complementary

#B42B15 #15B47B #154FB4

monochromatic

#461108 #7D1E0F #B42B15 #E53C21 #EC6C58

Accessibility & contrast

On white

6.37

#B42B15 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#B42B15 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42B15

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42B15	#FFFFFF	#000000	##FFFFFF
##B42B15	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564C0F

Deuteranopia (green-blind)

#786A0A

Tritanopia (blue-blind)

#C70028

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #b42b15;
/* rgb */ color: rgb(180, 43, 21);
/* oklch */ color: oklch(50.7% 0.177 31.8);

Tailwind

colors: {
  custom: {
    50: '#d57056',
    500: '#b42b15',
    950: '#000000',
  },
}

SCSS

$custom: #b42b15;
$custom-light: #d57056;
$custom-dark: #000000;

JSON

{
  "hex": "#b42b15",
  "rgb": {
    "r": 180,
    "g": 43,
    "b": 21
  },
  "hsl": {
    "h": 8.302,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.50663,
    "c": 0.1767,
    "h": 31.8
  },
  "luminance": 0.11485
}

Semantic roles & 50–950 ramp

primary

#B42B15

secondary

#56BECF

accent

#DBF632

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#160803

muted

#847B78

Preview Lab

Preview with #B42B15

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

Preview Lab → · Contrast checker → · Palette generator →