#643B21#643B21

#643B21 is a dark, moderate orange. Relative luminance 0.059; OKLCH L 39.6% C 0.070 H 51.8°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#643B21
RGB	rgb(100, 59, 33)
HSL	hsl(23, 50%, 26%)
HSV	hsv(23, 67%, 39%)
CMYK	cmyk(0%, 41%, 67%, 60.8%)
CIE-LAB	lab(29.28, 15.35, 23.49)
CIE-LCH	lch(29.28, 28.06, 56.84°)
OKLab	oklab(39.61% 0.0432 0.0549)
OKLCH	oklch(39.61% 0.07 51.8)
XYZ	xyz(7.0945, 5.9477, 2.2129)
Luminance	0.0595 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B21 #214A64

analogous

#642128 #643B21 #645C21

triadic

#643B21 #21643B #3B2164

tetradic

#643B21 #286421 #214A64 #5C2164

square

#643B21 #286421 #214A64 #5C2164

split-complementary

#643B21 #21645C #212864

monochromatic

#170E08 #362012 #643B21 #925630 #C07140

Accessibility & contrast

On white

9.59

#643B21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#643B21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B21

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B21	#FFFFFF	#000000	##FFFFFF
##643B21	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47401F

Deuteranopia (green-blind)

#504921

Tritanopia (blue-blind)

#6D3335

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643b21;
/* rgb */ color: rgb(100, 59, 33);
/* oklch */ color: oklch(39.6% 0.070 51.8);

Tailwind

colors: {
  custom: {
    50: '#94715d',
    500: '#643b21',
    950: '#000000',
  },
}

SCSS

$custom: #643b21;
$custom-light: #94715d;
$custom-dark: #000000;

JSON

{
  "hex": "#643b21",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 33
  },
  "hsl": {
    "h": 23.284,
    "s": 50.376,
    "l": 26.078
  },
  "oklch": {
    "l": 0.39606,
    "c": 0.06985,
    "h": 51.8
  },
  "luminance": 0.05947
}

Semantic roles & 50–950 ramp

primary

#643B21

secondary

#497998

accent

#A4DA4E

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0704

muted

#7E7A79

Preview Lab

Preview with #643B21

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

Preview Lab → · Contrast checker → · Palette generator →