#B3581E#B3581E

#B3581E is a mid, vivid orange. Relative luminance 0.167; OKLCH L 56.3% C 0.136 H 48.6°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#B3581E
RGB	rgb(179, 88, 30)
HSL	hsl(23, 71%, 41%)
HSV	hsv(23, 83%, 70%)
CMYK	cmyk(0%, 50.8%, 83.2%, 29.8%)
CIE-LAB	lab(47.83, 33.34, 47.89)
CIE-LCH	lch(47.83, 58.35, 55.16°)
OKLab	oklab(56.27% 0.0901 0.1022)
OKLCH	oklch(56.27% 0.136 48.6)
XYZ	xyz(22.3167, 16.6597, 3.2685)
Luminance	0.1666 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3581E #1E79B3

analogous

#B31E2E #B3581E #B3A21E

triadic

#B3581E #1EB358 #581EB3

tetradic

#B3581E #2EB31E #1E79B3 #A21EB3

square

#B3581E #2EB31E #1E79B3 #A21EB3

split-complementary

#B3581E #1EB3A2 #1E2EB3

monochromatic

#4A240C #7F3E15 #B3581E #DD7432 #E59866

Accessibility & contrast

On white

4.85

#B3581E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#B3581E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3581E

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3581E	#FFFFFF	#000000	##FFFFFF
##B3581E	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#726514

Deuteranopia (green-blind)

#88791C

Tritanopia (blue-blind)

#C5444D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #b3581e;
/* rgb */ color: rgb(179, 88, 30);
/* oklch */ color: oklch(56.3% 0.136 48.6);

Tailwind

colors: {
  custom: {
    50: '#d1895f',
    500: '#b3581e',
    950: '#000000',
  },
}

SCSS

$custom: #b3581e;
$custom-light: #d1895f;
$custom-dark: #000000;

JSON

{
  "hex": "#b3581e",
  "rgb": {
    "r": 179,
    "g": 88,
    "b": 30
  },
  "hsl": {
    "h": 23.356,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.56268,
    "c": 0.13624,
    "h": 48.6
  },
  "luminance": 0.16657
}

Semantic roles & 50–950 ramp

primary

#B3581E

secondary

#62A2CB

accent

#A8EE3A

background

#FDF8F5

surface

#FBF0E9

border

#D4CBC5

text

#150B05

muted

#837C79

Preview Lab

Preview with #B3581E

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

Preview Lab → · Contrast checker → · Palette generator →