#B3611B#B3611B

#B3611B is a mid, vivid orange. Relative luminance 0.182; OKLCH L 57.7% C 0.131 H 55.1°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#B3611B
RGB	rgb(179, 97, 27)
HSL	hsl(28, 74%, 40%)
HSV	hsv(28, 85%, 70%)
CMYK	cmyk(0%, 45.8%, 84.9%, 29.8%)
CIE-LAB	lab(49.76, 28.44, 50.78)
CIE-LCH	lch(49.76, 58.20, 60.75°)
OKLab	oklab(57.74% 0.075 0.1077)
OKLCH	oklch(57.74% 0.131 55.1)
XYZ	xyz(23.0651, 18.2149, 3.3379)
Luminance	0.1821 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3611B #1B6DB3

analogous

#B31B21 #B3611B #B3AD1B

triadic

#B3611B #1BB361 #611BB3

tetradic

#B3611B #21B31B #1B6DB3 #AD1BB3

square

#B3611B #21B31B #1B6DB3 #AD1BB3

split-complementary

#B3611B #1BB3AD #1B21B3

monochromatic

#49270B #7E4413 #B3611B #DF7F2C #E79F61

Accessibility & contrast

On white

4.52

#B3611B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#B3611B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #B3611B

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3611B	#FFFFFF	#000000	##000000
##B3611B	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#796B0D

Deuteranopia (green-blind)

#8D7E1A

Tritanopia (blue-blind)

#C44F54

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #b3611b;
/* rgb */ color: rgb(179, 97, 27);
/* oklch */ color: oklch(57.7% 0.131 55.1);

Tailwind

colors: {
  custom: {
    50: '#d18f5e',
    500: '#b3611b',
    950: '#000000',
  },
}

SCSS

$custom: #b3611b;
$custom-light: #d18f5e;
$custom-dark: #000000;

JSON

{
  "hex": "#b3611b",
  "rgb": {
    "r": 179,
    "g": 97,
    "b": 27
  },
  "hsl": {
    "h": 27.632,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.5774,
    "c": 0.13127,
    "h": 55.1
  },
  "luminance": 0.18212
}

Semantic roles & 50–950 ramp

primary

#B3611B

secondary

#5E99CC

accent

#9BF037

background

#FDF8F5

surface

#FBF0E9

border

#D4CBC5

text

#150C05

muted

#837D79

Preview Lab

Preview with #B3611B

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

Preview Lab → · Contrast checker → · Palette generator →