#B3731D#B3731D

#B3731D is a mid, vivid orange. Relative luminance 0.219; OKLCH L 61.0% C 0.124 H 68.1°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#B3731D
RGB	rgb(179, 115, 29)
HSL	hsl(34, 72%, 41%)
HSV	hsv(34, 84%, 70%)
CMYK	cmyk(0%, 35.8%, 83.8%, 29.8%)
CIE-LAB	lab(53.96, 18.58, 53.68)
CIE-LCH	lch(53.96, 56.80, 70.91°)
OKLab	oklab(60.99% 0.0462 0.1147)
OKLCH	oklch(60.99% 0.124 68.1)
XYZ	xyz(24.9450, 21.9363, 4.0826)
Luminance	0.2193 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3731D #1D5DB3

analogous

#B3281D #B3731D #A8B31D

triadic

#B3731D #1DB373 #731DB3

tetradic

#B3731D #1DB328 #1D5DB3 #B31DA8

square

#B3731D #1DB328 #1D5DB3 #B31DA8

split-complementary

#B3731D #1DA8B3 #281DB3

monochromatic

#4A2F0C #7E5114 #B3731D #DD9330 #E6AF64

Accessibility & contrast

On white

3.90

#B3731D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#B3731D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #B3731D

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3731D	#FFFFFF	#000000	##000000
##B3731D	1.00	3.90	5.39	5.39
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#88780A

Deuteranopia (green-blind)

#97871F

Tritanopia (blue-blind)

#C46363

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #b3731d;
/* rgb */ color: rgb(179, 115, 29);
/* oklch */ color: oklch(61.0% 0.124 68.1);

Tailwind

colors: {
  custom: {
    50: '#d09b62',
    500: '#b3731d',
    950: '#000000',
  },
}

SCSS

$custom: #b3731d;
$custom-light: #d09b62;
$custom-dark: #000000;

JSON

{
  "hex": "#b3731d",
  "rgb": {
    "r": 179,
    "g": 115,
    "b": 29
  },
  "hsl": {
    "h": 34.4,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.60991,
    "c": 0.12365,
    "h": 68.1
  },
  "luminance": 0.21934
}

Semantic roles & 50–950 ramp

primary

#B3731D

secondary

#618ECB

accent

#87EF39

background

#FDF9F6

surface

#FBF2EB

border

#D4CCC6

text

#150E05

muted

#837E7A

Preview Lab

Preview with #B3731D

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

Preview Lab → · Contrast checker → · Palette generator →