#66643A#66643A

#66643A is a mid, moderate yellow. Relative luminance 0.122; OKLCH L 49.4% C 0.061 H 106.1°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#66643A
RGB	rgb(102, 100, 58)
HSL	hsl(57, 28%, 31%)
HSV	hsv(57, 43%, 40%)
CMYK	cmyk(0%, 2%, 43.1%, 60%)
CIE-LAB	lab(41.60, -6.11, 24.08)
CIE-LCH	lch(41.60, 24.84, 104.23°)
OKLab	oklab(49.44% -0.0168 0.0585)
OKLCH	oklch(49.44% 0.061 106.1)
XYZ	xyz(10.8006, 12.2449, 5.7967)
Luminance	0.1225 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66643A #3A3C66

analogous

#664E3A #66643A #52663A

triadic

#66643A #3A6664 #643A66

tetradic

#66643A #3A664E #3A3C66 #663A52

square

#66643A #3A664E #3A3C66 #663A52

split-complementary

#66643A #3A5266 #4E3A66

monochromatic

#18180E #3F3E24 #66643A #8D8A50 #ACAA6E

Accessibility & contrast

On white

6.09

#66643A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#66643A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #66643A

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66643A	#FFFFFF	#000000	##FFFFFF
##66643A	1.00	6.09	3.45	6.09
#FFFFFF	6.09	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B6137

Deuteranopia (green-blind)

#6C633C

Tritanopia (blue-blind)

#6C5F5A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #66643a;
/* rgb */ color: rgb(102, 100, 58);
/* oklch */ color: oklch(49.4% 0.061 106.1);

Tailwind

colors: {
  custom: {
    50: '#929071',
    500: '#66643a',
    950: '#000000',
  },
}

SCSS

$custom: #66643a;
$custom-light: #929071;
$custom-dark: #000000;

JSON

{
  "hex": "#66643a",
  "rgb": {
    "r": 102,
    "g": 100,
    "b": 58
  },
  "hsl": {
    "h": 57.273,
    "s": 27.5,
    "l": 31.373
  },
  "oklch": {
    "l": 0.49444,
    "c": 0.06089,
    "h": 106.1
  },
  "luminance": 0.12245
}

Semantic roles & 50–950 ramp

primary

#66643A

secondary

#666896

accent

#68C464

background

#F9F8F6

surface

#F1F0EC

border

#CBCBC7

text

#0D0C07

muted

#7E7D7A

Preview Lab

Preview with #66643A

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

Preview Lab → · Contrast checker → · Palette generator →