#B42F10#B42F10

#B42F10 is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.0% C 0.174 H 33.7°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#B42F10
RGB	rgb(180, 47, 16)
HSL	hsl(11, 84%, 38%)
HSV	hsv(11, 91%, 71%)
CMYK	cmyk(0%, 73.9%, 91.1%, 29.4%)
CIE-LAB	lab(40.86, 51.99, 47.91)
CIE-LCH	lch(40.86, 70.70, 42.66°)
OKLab	oklab(51% 0.1449 0.0967)
OKLCH	oklch(51% 0.174 33.7)
XYZ	xyz(19.9349, 11.7769, 1.7136)
Luminance	0.1177 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42F10 #1095B4

analogous

#B41043 #B42F10 #B48110

triadic

#B42F10 #10B42F #2F10B4

tetradic

#B42F10 #43B410 #1095B4 #8110B4

square

#B42F10 #43B410 #1095B4 #8110B4

split-complementary

#B42F10 #10B481 #1043B4

monochromatic

#441206 #7C200B #B42F10 #EA3F17 #EF6D4F

Accessibility & contrast

On white

6.26

#B42F10 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#B42F10 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42F10

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42F10	#FFFFFF	#000000	##FFFFFF
##B42F10	1.00	6.26	3.35	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584D08

Deuteranopia (green-blind)

#796B03

Tritanopia (blue-blind)

#C7002A

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b42f10;
/* rgb */ color: rgb(180, 47, 16);
/* oklch */ color: oklch(51.0% 0.174 33.7);

Tailwind

colors: {
  custom: {
    50: '#d57154',
    500: '#b42f10',
    950: '#000000',
  },
}

SCSS

$custom: #b42f10;
$custom-light: #d57154;
$custom-dark: #000000;

JSON

{
  "hex": "#b42f10",
  "rgb": {
    "r": 180,
    "g": 47,
    "b": 16
  },
  "hsl": {
    "h": 11.341,
    "s": 83.673,
    "l": 38.431
  },
  "oklch": {
    "l": 0.51004,
    "c": 0.17421,
    "h": 33.7
  },
  "luminance": 0.11774
}

Semantic roles & 50–950 ramp

primary

#B42F10

secondary

#4FB8D1

accent

#D3FA2E

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#160803

muted

#847B78

Preview Lab

Preview with #B42F10

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

Preview Lab → · Contrast checker → · Palette generator →