#B4631B#B4631B

#B4631B is a mid, vivid orange. Relative luminance 0.187; OKLCH L 58.2% C 0.131 H 56.2°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#B4631B
RGB	rgb(180, 99, 27)
HSL	hsl(28, 74%, 41%)
HSV	hsv(28, 85%, 71%)
CMYK	cmyk(0%, 45%, 85%, 29.4%)
CIE-LAB	lab(50.34, 27.78, 51.34)
CIE-LCH	lch(50.34, 58.37, 61.58°)
OKLab	oklab(58.22% 0.073 0.1089)
OKLCH	oklch(58.22% 0.131 56.2)
XYZ	xyz(23.4843, 18.7088, 3.4111)
Luminance	0.1871 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4631B #1B6CB4

analogous

#B41B20 #B4631B #B4AF1B

triadic

#B4631B #1BB463 #631BB4

tetradic

#B4631B #20B41B #1B6CB4 #AF1BB4

square

#B4631B #20B41B #1B6CB4 #AF1BB4

split-complementary

#B4631B #1BB4AF #1B20B4

monochromatic

#4A280B #7F4613 #B4631B #DF812D #E7A162

Accessibility & contrast

On white

4.43

#B4631B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#B4631B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #B4631B

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4631B	#FFFFFF	#000000	##000000
##B4631B	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B6D0C

Deuteranopia (green-blind)

#8E7F1A

Tritanopia (blue-blind)

#C55155

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #b4631b;
/* rgb */ color: rgb(180, 99, 27);
/* oklch */ color: oklch(58.2% 0.131 56.2);

Tailwind

colors: {
  custom: {
    50: '#d1905f',
    500: '#b4631b',
    950: '#000000',
  },
}

SCSS

$custom: #b4631b;
$custom-light: #d1905f;
$custom-dark: #000000;

JSON

{
  "hex": "#b4631b",
  "rgb": {
    "r": 180,
    "g": 99,
    "b": 27
  },
  "hsl": {
    "h": 28.235,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.58222,
    "c": 0.13108,
    "h": 56.2
  },
  "luminance": 0.18706
}

Semantic roles & 50–950 ramp

primary

#B4631B

secondary

#5F99CC

accent

#99F137

background

#FDF8F5

surface

#FBF0EA

border

#D4CBC6

text

#150C05

muted

#837D79

Preview Lab

Preview with #B4631B

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

Preview Lab → · Contrast checker → · Palette generator →