#B3631D#B3631D

#B3631D is a mid, vivid orange. Relative luminance 0.186; OKLCH L 58.1% C 0.130 H 56.1°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#B3631D
RGB	rgb(179, 99, 29)
HSL	hsl(28, 72%, 41%)
HSV	hsv(28, 84%, 70%)
CMYK	cmyk(0%, 44.7%, 83.8%, 29.8%)
CIE-LAB	lab(50.21, 27.41, 50.41)
CIE-LCH	lch(50.21, 57.38, 61.46°)
OKLab	oklab(58.1% 0.0722 0.1075)
OKLCH	oklch(58.1% 0.13 56.1)
XYZ	xyz(23.2762, 18.5988, 3.5263)
Luminance	0.1860 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3631D #1D6DB3

analogous

#B31D22 #B3631D #B3AE1D

triadic

#B3631D #1DB363 #631DB3

tetradic

#B3631D #22B31D #1D6DB3 #AE1DB3

square

#B3631D #22B31D #1D6DB3 #AE1DB3

split-complementary

#B3631D #1DB3AE #1D22B3

monochromatic

#4A290C #7E4614 #B3631D #DD8130 #E6A164

Accessibility & contrast

On white

4.45

#B3631D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#B3631D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #B3631D

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3631D	#FFFFFF	#000000	##000000
##B3631D	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B6C10

Deuteranopia (green-blind)

#8E7F1C

Tritanopia (blue-blind)

#C45156

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #b3631d;
/* rgb */ color: rgb(179, 99, 29);
/* oklch */ color: oklch(58.1% 0.130 56.1);

Tailwind

colors: {
  custom: {
    50: '#d09060',
    500: '#b3631d',
    950: '#000000',
  },
}

SCSS

$custom: #b3631d;
$custom-light: #d09060;
$custom-dark: #000000;

JSON

{
  "hex": "#b3631d",
  "rgb": {
    "r": 179,
    "g": 99,
    "b": 29
  },
  "hsl": {
    "h": 28,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.58096,
    "c": 0.1295,
    "h": 56.1
  },
  "luminance": 0.18596
}

Semantic roles & 50–950 ramp

primary

#B3631D

secondary

#6199CB

accent

#9AEF39

background

#FDF8F5

surface

#FBF0EA

border

#D4CBC6

text

#150C05

muted

#837D79

Preview Lab

Preview with #B3631D

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

Preview Lab → · Contrast checker → · Palette generator →