#643F18#643F18

#643F18 is a dark, moderate orange. Relative luminance 0.063; OKLCH L 40.3% C 0.074 H 64.1°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#643F18
RGB	rgb(100, 63, 24)
HSL	hsl(31, 61%, 24%)
HSV	hsv(31, 76%, 39%)
CMYK	cmyk(0%, 37%, 76%, 60.8%)
CIE-LAB	lab(30.23, 12.27, 29.66)
CIE-LCH	lch(30.23, 32.09, 67.53°)
OKLab	oklab(40.31% 0.0324 0.0666)
OKLCH	oklch(40.31% 0.074 64.1)
XYZ	xyz(7.1984, 6.3310, 1.7069)
Luminance	0.0633 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F18 #183D64

analogous

#641918 #643F18 #636418

triadic

#643F18 #18643F #3F1864

tetradic

#643F18 #186419 #183D64 #641863

square

#643F18 #186419 #183D64 #641863

split-complementary

#643F18 #186364 #191864

monochromatic

#191006 #33200C #643F18 #955E24 #C77D30

Accessibility & contrast

On white

9.27

#643F18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#643F18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F18

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F18	#FFFFFF	#000000	##FFFFFF
##643F18	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4213

Deuteranopia (green-blind)

#534B19

Tritanopia (blue-blind)

#6E3737

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #643f18;
/* rgb */ color: rgb(100, 63, 24);
/* oklch */ color: oklch(40.3% 0.074 64.1);

Tailwind

colors: {
  custom: {
    50: '#947457',
    500: '#643f18',
    950: '#000000',
  },
}

SCSS

$custom: #643f18;
$custom-light: #947457;
$custom-dark: #000000;

JSON

{
  "hex": "#643f18",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 24
  },
  "hsl": {
    "h": 30.789,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.40308,
    "c": 0.07404,
    "h": 64.1
  },
  "luminance": 0.0633
}

Semantic roles & 50–950 ramp

primary

#643F18

secondary

#3E6B9A

accent

#92E443

background

#F9F7F5

surface

#F2EDE9

border

#CCC8C5

text

#0E0803

muted

#7E7B78

Preview Lab

Preview with #643F18

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

Preview Lab → · Contrast checker → · Palette generator →