#643E0F#643E0F

#643E0F is a dark, moderate orange. Relative luminance 0.062; OKLCH L 40.0% C 0.080 H 66.6°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#643E0F
RGB	rgb(100, 62, 15)
HSL	hsl(33, 74%, 23%)
HSV	hsv(33, 85%, 39%)
CMYK	cmyk(0%, 38%, 85%, 60.8%)
CIE-LAB	lab(29.89, 12.44, 33.70)
CIE-LCH	lch(29.89, 35.93, 69.74°)
OKLab	oklab(40.01% 0.0315 0.073)
OKLCH	oklch(40.01% 0.08 66.6)
XYZ	xyz(7.0650, 6.1898, 1.2745)
Luminance	0.0619 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E0F #0F3564

analogous

#64130F #643E0F #60640F

triadic

#643E0F #0F643E #3E0F64

tetradic

#643E0F #0F6413 #0F3564 #640F60

square

#643E0F #0F6413 #0F3564 #640F60

split-complementary

#643E0F #0F6064 #130F64

monochromatic

#1B1004 #2F1D07 #643E0F #995F17 #CE801F

Accessibility & contrast

On white

9.38

#643E0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#643E0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E0F

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E0F	#FFFFFF	#000000	##FFFFFF
##643E0F	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4107

Deuteranopia (green-blind)

#534A10

Tritanopia (blue-blind)

#6E3535

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #643e0f;
/* rgb */ color: rgb(100, 62, 15);
/* oklch */ color: oklch(40.0% 0.080 66.6);

Tailwind

colors: {
  custom: {
    50: '#957351',
    500: '#643e0f',
    950: '#000000',
  },
}

SCSS

$custom: #643e0f;
$custom-light: #957351;
$custom-dark: #000000;

JSON

{
  "hex": "#643e0f",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 15
  },
  "hsl": {
    "h": 33.176,
    "s": 73.913,
    "l": 22.549
  },
  "oklch": {
    "l": 0.40014,
    "c": 0.0795,
    "h": 66.6
  },
  "luminance": 0.06189
}

Semantic roles & 50–950 ramp

primary

#643E0F

secondary

#32629D

accent

#8AF137

background

#F9F6F4

surface

#F2ECE7

border

#CCC7C3

text

#0E0802

muted

#7E7B78

Preview Lab

Preview with #643E0F

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

Preview Lab → · Contrast checker → · Palette generator →