#666A80#666A80

#666A80 is a mid, muted blue. Relative luminance 0.147; OKLCH L 52.9% C 0.035 H 277.0°. Best body text is #FFFFFF at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#666A80
RGB	rgb(102, 106, 128)
HSL	hsl(231, 11%, 45%)
HSV	hsv(231, 20%, 50%)
CMYK	cmyk(20.3%, 17.2%, 0%, 49.8%)
CIE-LAB	lab(45.21, 3.51, -12.69)
CIE-LCH	lch(45.21, 13.17, 285.48°)
OKLab	oklab(52.89% 0.0043 -0.0346)
OKLCH	oklch(52.89% 0.035 277)
XYZ	xyz(14.5289, 14.6911, 22.4881)
Luminance	0.1469 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666A80 #807C66

analogous

#667780 #666A80 #6F6680

triadic

#666A80 #80666A #6A8066

tetradic

#666A80 #806677 #807C66 #66806F

square

#666A80 #806677 #807C66 #66806F

split-complementary

#666A80 #806F66 #778066

monochromatic

#30323C #4B4E5E #666A80 #85899E #A7AAB9

Accessibility & contrast

On white

5.33

#666A80 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#666A80 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666A80

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666A80	#FFFFFF	#000000	##FFFFFF
##666A80	1.00	5.33	3.94	5.33
#FFFFFF	5.33	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#646C81

Deuteranopia (green-blind)

#636A7F

Tritanopia (blue-blind)

#606E71

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #666a80;
/* rgb */ color: rgb(102, 106, 128);
/* oklch */ color: oklch(52.9% 0.035 277.0);

Tailwind

colors: {
  custom: {
    50: '#9294a4',
    500: '#666a80',
    950: '#000000',
  },
}

SCSS

$custom: #666a80;
$custom-light: #9294a4;
$custom-dark: #000000;

JSON

{
  "hex": "#666a80",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 128
  },
  "hsl": {
    "h": 230.769,
    "s": 11.304,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52892,
    "c": 0.03484,
    "h": 277
  },
  "luminance": 0.14691
}

Semantic roles & 50–950 ramp

primary

#666A80

secondary

#A8A699

accent

#AA74B4

background

#F8F9FA

surface

#F0F1F4

border

#CBCBCE

text

#0D0D0F

muted

#7D7E7F

Preview Lab

Preview with #666A80

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

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