#666C7E#666C7E

#666C7E is a mid, muted blue. Relative luminance 0.151; OKLCH L 53.3% C 0.029 H 270.8°. Best body text is #FFFFFF at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#666C7E
RGB	rgb(102, 108, 126)
HSL	hsl(225, 11%, 45%)
HSV	hsv(225, 19%, 49%)
CMYK	cmyk(19%, 14.3%, 0%, 50.6%)
CIE-LAB	lab(45.71, 1.83, -10.73)
CIE-LCH	lch(45.71, 10.89, 279.66°)
OKLab	oklab(53.26% 0.0004 -0.0292)
OKLCH	oklch(53.26% 0.029 270.8)
XYZ	xyz(14.6070, 15.0560, 21.8711)
Luminance	0.1506 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C7E #7E7866

analogous

#66787E #666C7E #6C667E

triadic

#666C7E #7E666C #6C7E66

tetradic

#666C7E #7E6678 #7E7866 #667E6C

square

#666C7E #7E6678 #7E7866 #667E6C

split-complementary

#666C7E #7E6C66 #787E66

monochromatic

#2F323A #4B4F5C #666C7E #858B9C #A7ABB8

Accessibility & contrast

On white

5.24

#666C7E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#666C7E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C7E

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C7E	#FFFFFF	#000000	##FFFFFF
##666C7E	1.00	5.24	4.01	5.24
#FFFFFF	5.24	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#676D7F

Deuteranopia (green-blind)

#656B7E

Tritanopia (blue-blind)

#606F72

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #666c7e;
/* rgb */ color: rgb(102, 108, 126);
/* oklch */ color: oklch(53.3% 0.029 270.8);

Tailwind

colors: {
  custom: {
    50: '#9296a3',
    500: '#666c7e',
    950: '#000000',
  },
}

SCSS

$custom: #666c7e;
$custom-light: #9296a3;
$custom-dark: #000000;

JSON

{
  "hex": "#666c7e",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 126
  },
  "hsl": {
    "h": 225,
    "s": 10.526,
    "l": 44.706
  },
  "oklch": {
    "l": 0.53261,
    "c": 0.02916,
    "h": 270.8
  },
  "luminance": 0.15056
}

Semantic roles & 50–950 ramp

primary

#666C7E

secondary

#A7A399

accent

#A474B3

background

#F8F9FA

surface

#F0F1F3

border

#CBCBCD

text

#0D0D0F

muted

#7D7E7F

Preview Lab

Preview with #666C7E

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

Preview Lab → · Contrast checker → · Palette generator →