#B43F1F#B43F1F

#B43F1F is a mid, vivid red. Relative luminance 0.134; OKLCH L 52.9% C 0.158 H 35.7°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#B43F1F
RGB	rgb(180, 63, 31)
HSL	hsl(13, 71%, 41%)
HSV	hsv(13, 83%, 71%)
CMYK	cmyk(0%, 65%, 82.8%, 29.4%)
CIE-LAB	lab(43.30, 45.94, 43.37)
CIE-LCH	lch(43.30, 63.18, 43.35°)
OKLab	oklab(52.87% 0.1285 0.0924)
OKLCH	oklch(52.87% 0.158 35.7)
XYZ	xyz(20.8496, 13.3603, 2.7770)
Luminance	0.1336 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43F1F #1F94B4

analogous

#B41F4A #B43F1F #B48A1F

triadic

#B43F1F #1FB43F #3F1FB4

tetradic

#B43F1F #4AB41F #1F94B4 #8A1FB4

square

#B43F1F #4AB41F #1F94B4 #8A1FB4

split-complementary

#B43F1F #1FB48A #1F4AB4

monochromatic

#4C1A0D #802D16 #B43F1F #DC5834 #E58368

Accessibility & contrast

On white

5.72

#B43F1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B43F1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43F1F

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43F1F	#FFFFFF	#000000	##FFFFFF
##B43F1F	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#61561A

Deuteranopia (green-blind)

#7E7019

Tritanopia (blue-blind)

#C61D39

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b43f1f;
/* rgb */ color: rgb(180, 63, 31);
/* oklch */ color: oklch(52.9% 0.158 35.7);

Tailwind

colors: {
  custom: {
    50: '#d37a5e',
    500: '#b43f1f',
    950: '#000000',
  },
}

SCSS

$custom: #b43f1f;
$custom-light: #d37a5e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43f1f",
  "rgb": {
    "r": 180,
    "g": 63,
    "b": 31
  },
  "hsl": {
    "h": 12.886,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.52866,
    "c": 0.1583,
    "h": 35.7
  },
  "luminance": 0.13357
}

Semantic roles & 50–950 ramp

primary

#B43F1F

secondary

#64B5CB

accent

#C7ED3A

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43F1F

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

Preview Lab → · Contrast checker → · Palette generator →