#666C54#666C54

#666C54 is a mid, muted yellow-green. Relative luminance 0.142; OKLCH L 51.9% C 0.037 H 119.1°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#666C54
RGB	rgb(102, 108, 84)
HSL	hsl(75, 13%, 38%)
HSV	hsv(75, 22%, 42%)
CMYK	cmyk(5.6%, 0%, 22.2%, 57.6%)
CIE-LAB	lab(44.50, -6.92, 12.69)
CIE-LCH	lch(44.50, 14.46, 118.59°)
OKLab	oklab(51.91% -0.018 0.0324)
OKLCH	oklch(51.91% 0.037 119.1)
XYZ	xyz(12.4421, 14.1900, 10.4693)
Luminance	0.1419 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C54 #5A546C

analogous

#6C6654 #666C54 #5A6C54

triadic

#666C54 #54666C #6C5466

tetradic

#666C54 #546C66 #5A546C #6C545A

square

#666C54 #546C66 #5A546C #6C545A

split-complementary

#666C54 #545A6C #66546C

monochromatic

#25271E #454A39 #666C54 #878E6F #A3A991

Accessibility & contrast

On white

5.47

#666C54 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#666C54 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C54

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C54	#FFFFFF	#000000	##FFFFFF
##666C54	1.00	5.47	3.84	5.47
#FFFFFF	5.47	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F6953

Deuteranopia (green-blind)

#6F6955

Tritanopia (blue-blind)

#686965

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666c54;
/* rgb */ color: rgb(102, 108, 84);
/* oklch */ color: oklch(51.9% 0.037 119.1);

Tailwind

colors: {
  custom: {
    50: '#919684',
    500: '#666c54',
    950: '#000000',
  },
}

SCSS

$custom: #666c54;
$custom-light: #919684;
$custom-dark: #000000;

JSON

{
  "hex": "#666c54",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 84
  },
  "hsl": {
    "h": 75,
    "s": 12.5,
    "l": 37.647
  },
  "oklch": {
    "l": 0.51911,
    "c": 0.03707,
    "h": 119.1
  },
  "luminance": 0.1419
}

Semantic roles & 50–950 ramp

primary

#666C54

secondary

#898498

accent

#72B583

background

#F8F9F8

surface

#F0F1EF

border

#CBCBCA

text

#0D0D0A

muted

#7D7E7C

Preview Lab

Preview with #666C54

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

Preview Lab → · Contrast checker → · Palette generator →