#643F2F#643F2F

#643F2F is a dark, muted orange. Relative luminance 0.065; OKLCH L 40.7% C 0.058 H 44.1°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#643F2F
RGB	rgb(100, 63, 47)
HSL	hsl(18, 36%, 29%)
HSV	hsv(18, 53%, 39%)
CMYK	cmyk(0%, 37%, 53%, 60.8%)
CIE-LAB	lab(30.57, 14.17, 16.46)
CIE-LCH	lch(30.57, 21.72, 49.27°)
OKLab	oklab(40.68% 0.0418 0.0405)
OKLCH	oklch(40.68% 0.058 44.1)
XYZ	xyz(7.5465, 6.4702, 3.5402)
Luminance	0.0647 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F2F #2F5464

analogous

#642F3A #643F2F #645A2F

triadic

#643F2F #2F643F #3F2F64

tetradic

#643F2F #3A642F #2F5464 #5A2F64

square

#643F2F #3A642F #2F5464 #5A2F64

split-complementary

#643F2F #2F645A #2F3A64

monochromatic

#150D0A #3A251B #643F2F #8E5943 #B2765B

Accessibility & contrast

On white

9.15

#643F2F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#643F2F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F2F

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F2F	#FFFFFF	#000000	##FFFFFF
##643F2F	1.00	9.15	2.29	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49432E

Deuteranopia (green-blind)

#514B2F

Tritanopia (blue-blind)

#6C393B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #643f2f;
/* rgb */ color: rgb(100, 63, 47);
/* oklch */ color: oklch(40.7% 0.058 44.1);

Tailwind

colors: {
  custom: {
    50: '#927467',
    500: '#643f2f',
    950: '#000000',
  },
}

SCSS

$custom: #643f2f;
$custom-light: #927467;
$custom-dark: #000000;

JSON

{
  "hex": "#643f2f",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 47
  },
  "hsl": {
    "h": 18.113,
    "s": 36.054,
    "l": 28.824
  },
  "oklch": {
    "l": 0.40677,
    "c": 0.05815,
    "h": 44.1
  },
  "luminance": 0.0647
}

Semantic roles & 50–950 ramp

primary

#643F2F

secondary

#598396

accent

#AACC5C

background

#F9F7F6

surface

#F1EDEB

border

#CBC8C6

text

#0D0806

muted

#7E7B7A

Preview Lab

Preview with #643F2F

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

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