#666C5C#666C5C

#666C5C is a mid, muted yellow-green. Relative luminance 0.143; OKLCH L 52.1% C 0.026 H 124.0°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#666C5C
RGB	rgb(102, 108, 92)
HSL	hsl(83, 8%, 39%)
HSV	hsv(83, 15%, 42%)
CMYK	cmyk(5.6%, 0%, 14.8%, 57.6%)
CIE-LAB	lab(44.69, -5.49, 8.18)
CIE-LCH	lch(44.69, 9.86, 123.87°)
OKLab	oklab(52.12% -0.0143 0.0212)
OKLCH	oklch(52.12% 0.026 124)
XYZ	xyz(12.7735, 14.3226, 12.2147)
Luminance	0.1432 (WCAG relative)
Temperature	neutral
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C5C #625C6C

analogous

#6C6A5C #666C5C #5E6C5C

triadic

#666C5C #5C666C #6C5C66

tetradic

#666C5C #5C6C6A #625C6C #6C5C5E

square

#666C5C #5C6C6A #625C6C #6C5C5E

split-complementary

#666C5C #5C5E6C #6A5C6C

monochromatic

#282A24 #474B40 #666C5C #858D79 #A3A99A

Accessibility & contrast

On white

5.43

#666C5C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#666C5C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C5C

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C5C	#FFFFFF	#000000	##FFFFFF
##666C5C	1.00	5.43	3.86	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E6A5B

Deuteranopia (green-blind)

#6D6A5D

Tritanopia (blue-blind)

#676A67

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #666c5c;
/* rgb */ color: rgb(102, 108, 92);
/* oklch */ color: oklch(52.1% 0.026 124.0);

Tailwind

colors: {
  custom: {
    50: '#91968a',
    500: '#666c5c',
    950: '#000000',
  },
}

SCSS

$custom: #666c5c;
$custom-light: #91968a;
$custom-dark: #000000;

JSON

{
  "hex": "#666c5c",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 92
  },
  "hsl": {
    "h": 82.5,
    "s": 8,
    "l": 39.216
  },
  "oklch": {
    "l": 0.52122,
    "c": 0.02555,
    "h": 124
  },
  "luminance": 0.14323
}

Semantic roles & 50–950 ramp

primary

#666C5C

secondary

#908C98

accent

#77B18D

background

#F8F9F8

surface

#F0F1F0

border

#CBCBCB

text

#0C0D0B

muted

#7D7E7C

Preview Lab

Preview with #666C5C

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

Preview Lab → · Contrast checker → · Palette generator →