#666C7C#666C7C

#666C7C is a mid, muted blue. Relative luminance 0.150; OKLCH L 53.2% C 0.026 H 269.2°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#666C7C
RGB	rgb(102, 108, 124)
HSL	hsl(224, 10%, 44%)
HSV	hsv(224, 18%, 49%)
CMYK	cmyk(17.7%, 12.9%, 0%, 51.4%)
CIE-LAB	lab(45.64, 1.34, -9.64)
CIE-LCH	lch(45.64, 9.73, 277.94°)
OKLab	oklab(53.18% -0.0004 -0.0261)
OKLCH	oklch(53.18% 0.026 269.2)
XYZ	xyz(14.4793, 15.0049, 21.1983)
Luminance	0.1500 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C7C #7C7666

analogous

#66777C #666C7C #6B667C

triadic

#666C7C #7C666C #6C7C66

tetradic

#666C7C #7C6677 #7C7666 #667C6B

square

#666C7C #7C6677 #7C7666 #667C6B

split-complementary

#666C7C #7C6B66 #777C66

monochromatic

#2F3239 #4A4F5A #666C7C #858B9A #A6ABB6

Accessibility & contrast

On white

5.25

#666C7C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#666C7C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C7C

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C7C	#FFFFFF	#000000	##FFFFFF
##666C7C	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#676D7D

Deuteranopia (green-blind)

#666B7C

Tritanopia (blue-blind)

#616F71

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #666c7c;
/* rgb */ color: rgb(102, 108, 124);
/* oklch */ color: oklch(53.2% 0.026 269.2);

Tailwind

colors: {
  custom: {
    50: '#9196a2',
    500: '#666c7c',
    950: '#000000',
  },
}

SCSS

$custom: #666c7c;
$custom-light: #9196a2;
$custom-dark: #000000;

JSON

{
  "hex": "#666c7c",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 124
  },
  "hsl": {
    "h": 223.636,
    "s": 9.735,
    "l": 44.314
  },
  "oklch": {
    "l": 0.53183,
    "c": 0.02614,
    "h": 269.2
  },
  "luminance": 0.15005
}

Semantic roles & 50–950 ramp

primary

#666C7C

secondary

#A5A298

accent

#A275B3

background

#F8F9F9

surface

#F0F1F2

border

#CBCBCC

text

#0D0D0F

muted

#7D7E7E

Preview Lab

Preview with #666C7C

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

Preview Lab → · Contrast checker → · Palette generator →