#B4581F#B4581F

#B4581F is a mid, vivid orange. Relative luminance 0.168; OKLCH L 56.4% C 0.137 H 48.1°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#B4581F
RGB	rgb(180, 88, 31)
HSL	hsl(23, 71%, 41%)
HSV	hsv(23, 83%, 71%)
CMYK	cmyk(0%, 51.1%, 82.8%, 29.4%)
CIE-LAB	lab(47.99, 33.78, 47.67)
CIE-LCH	lch(47.99, 58.42, 54.68°)
OKLab	oklab(56.42% 0.0915 0.1019)
OKLCH	oklch(56.42% 0.137 48.1)
XYZ	xyz(22.5617, 16.7845, 3.3477)
Luminance	0.1678 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4581F #1F7BB4

analogous

#B41F31 #B4581F #B4A31F

triadic

#B4581F #1FB458 #581FB4

tetradic

#B4581F #31B41F #1F7BB4 #A31FB4

square

#B4581F #31B41F #1F7BB4 #A31FB4

split-complementary

#B4581F #1FB4A3 #1F31B4

monochromatic

#4C250D #803E16 #B4581F #DC7434 #E59868

Accessibility & contrast

On white

4.82

#B4581F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#B4581F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4581F

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4581F	#FFFFFF	#000000	##FFFFFF
##B4581F	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#726516

Deuteranopia (green-blind)

#897A1D

Tritanopia (blue-blind)

#C6444D

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #b4581f;
/* rgb */ color: rgb(180, 88, 31);
/* oklch */ color: oklch(56.4% 0.137 48.1);

Tailwind

colors: {
  custom: {
    50: '#d28960',
    500: '#b4581f',
    950: '#000000',
  },
}

SCSS

$custom: #b4581f;
$custom-light: #d28960;
$custom-dark: #000000;

JSON

{
  "hex": "#b4581f",
  "rgb": {
    "r": 180,
    "g": 88,
    "b": 31
  },
  "hsl": {
    "h": 22.953,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.56422,
    "c": 0.13696,
    "h": 48.1
  },
  "luminance": 0.16782
}

Semantic roles & 50–950 ramp

primary

#B4581F

secondary

#64A3CB

accent

#A9ED3A

background

#FDF8F5

surface

#FBF0EA

border

#D4CBC6

text

#150B05

muted

#837C79

Preview Lab

Preview with #B4581F

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

Preview Lab → · Contrast checker → · Palette generator →