#666C60#666C60

#666C60 is a mid, near-neutral grey. Relative luminance 0.144; OKLCH L 52.2% C 0.020 H 128.9°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#666C60
RGB	rgb(102, 108, 96)
HSL	hsl(90, 6%, 40%)
HSV	hsv(90, 11%, 42%)
CMYK	cmyk(5.6%, 0%, 11.1%, 57.6%)
CIE-LAB	lab(44.79, -4.74, 5.93)
CIE-LCH	lch(44.79, 7.59, 128.61°)
OKLab	oklab(52.24% -0.0124 0.0154)
OKLCH	oklch(52.24% 0.02 128.9)
XYZ	xyz(12.9530, 14.3944, 13.1601)
Luminance	0.1439 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C60 #66606C

analogous

#6C6C60 #666C60 #606C60

triadic

#666C60 #60666C #6C6066

tetradic

#666C60 #606C6C #66606C #6C6060

square

#666C60 #606C6C #66606C #6C6060

split-complementary

#666C60 #60606C #6C606C

monochromatic

#292B26 #474C43 #666C60 #858C7D #A3A99E

Accessibility & contrast

On white

5.41

#666C60 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#666C60 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C60

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C60	#FFFFFF	#000000	##FFFFFF
##666C60	1.00	5.41	3.88	5.41
#FFFFFF	5.41	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D6A5F

Deuteranopia (green-blind)

#6C6A60

Tritanopia (blue-blind)

#676B69

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #666c60;
/* rgb */ color: rgb(102, 108, 96);
/* oklch */ color: oklch(52.2% 0.020 128.9);

Tailwind

colors: {
  custom: {
    50: '#91968d',
    500: '#666c60',
    950: '#000000',
  },
}

SCSS

$custom: #666c60;
$custom-light: #91968d;
$custom-dark: #000000;

JSON

{
  "hex": "#666c60",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 96
  },
  "hsl": {
    "h": 90,
    "s": 5.882,
    "l": 40
  },
  "oklch": {
    "l": 0.52235,
    "c": 0.01983,
    "h": 128.9
  },
  "luminance": 0.14394
}

Semantic roles & 50–950 ramp

primary

#666C60

secondary

#948F98

accent

#79AF94

background

#F8F9F8

surface

#F0F1F0

border

#CBCBCB

text

#0C0D0C

muted

#7D7E7D

Preview Lab

Preview with #666C60

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

Preview Lab → · Contrast checker → · Palette generator →