#666C84#666C84

#666C84 is a mid, muted blue. Relative luminance 0.152; OKLCH L 53.5% C 0.038 H 274.0°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#666C84
RGB	rgb(102, 108, 132)
HSL	hsl(228, 13%, 46%)
HSV	hsv(228, 23%, 52%)
CMYK	cmyk(22.7%, 18.2%, 0%, 48.2%)
CIE-LAB	lab(45.93, 3.31, -13.99)
CIE-LCH	lch(45.93, 14.38, 283.29°)
OKLab	oklab(53.5% 0.0027 -0.0382)
OKLCH	oklch(53.5% 0.038 274)
XYZ	xyz(15.0059, 15.2155, 23.9716)
Luminance	0.1522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C84 #847E66

analogous

#667B84 #666C84 #6F6684

triadic

#666C84 #84666C #6C8466

tetradic

#666C84 #84667B #847E66 #66846F

square

#666C84 #84667B #847E66 #66846F

split-complementary

#666C84 #846F66 #7B8466

monochromatic

#31343F #4B5061 #666C84 #868BA1 #A8ACBC

Accessibility & contrast

On white

5.19

#666C84 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#666C84 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C84

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C84	#FFFFFF	#000000	##FFFFFF
##666C84	1.00	5.19	4.04	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#656E85

Deuteranopia (green-blind)

#636C83

Tritanopia (blue-blind)

#5F7074

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #666c84;
/* rgb */ color: rgb(102, 108, 132);
/* oklch */ color: oklch(53.5% 0.038 274.0);

Tailwind

colors: {
  custom: {
    50: '#9296a7',
    500: '#666c84',
    950: '#000000',
  },
}

SCSS

$custom: #666c84;
$custom-light: #9296a7;
$custom-dark: #000000;

JSON

{
  "hex": "#666c84",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 132
  },
  "hsl": {
    "h": 228,
    "s": 12.821,
    "l": 45.882
  },
  "oklch": {
    "l": 0.53503,
    "c": 0.03833,
    "h": 274
  },
  "luminance": 0.15216
}

Semantic roles & 50–950 ramp

primary

#666C84

secondary

#ABA89B

accent

#A872B6

background

#F9F9FA

surface

#F1F1F4

border

#CBCBCE

text

#0D0D0F

muted

#7E7E7F

Preview Lab

Preview with #666C84

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

Preview Lab → · Contrast checker → · Palette generator →