#666E80#666E80

#666E80 is a mid, muted blue. Relative luminance 0.155; OKLCH L 53.8% C 0.030 H 266.4°. Best body text is #FFFFFF at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#666E80
RGB	rgb(102, 110, 128)
HSL	hsl(222, 11%, 45%)
HSV	hsv(222, 20%, 50%)
CMYK	cmyk(20.3%, 14.1%, 0%, 49.8%)
CIE-LAB	lab(46.36, 1.12, -10.95)
CIE-LCH	lch(46.36, 11.01, 275.84°)
OKLab	oklab(53.79% -0.0019 -0.0298)
OKLCH	oklch(53.79% 0.03 266.4)
XYZ	xyz(14.9507, 15.5348, 22.6287)
Luminance	0.1553 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666E80 #807866

analogous

#667B80 #666E80 #6B6680

triadic

#666E80 #80666E #6E8066

tetradic

#666E80 #80667B #807866 #66806B

square

#666E80 #80667B #807866 #66806B

split-complementary

#666E80 #806B66 #7B8066

monochromatic

#30333C #4B515E #666E80 #858D9E #A7ADB9

Accessibility & contrast

On white

5.11

#666E80 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.11

#666E80 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666E80

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666E80	#FFFFFF	#000000	##FFFFFF
##666E80	1.00	5.11	4.11	5.11
#FFFFFF	5.11	1.00	21.00	1.00
#000000	4.11	21.00	1.00	21.00
##FFFFFF	5.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#696F81

Deuteranopia (green-blind)

#666D80

Tritanopia (blue-blind)

#607174

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #666e80;
/* rgb */ color: rgb(102, 110, 128);
/* oklch */ color: oklch(53.8% 0.030 266.4);

Tailwind

colors: {
  custom: {
    50: '#9297a4',
    500: '#666e80',
    950: '#000000',
  },
}

SCSS

$custom: #666e80;
$custom-light: #9297a4;
$custom-dark: #000000;

JSON

{
  "hex": "#666e80",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 128
  },
  "hsl": {
    "h": 221.538,
    "s": 11.304,
    "l": 45.098
  },
  "oklch": {
    "l": 0.53792,
    "c": 0.02984,
    "h": 266.4
  },
  "luminance": 0.15535
}

Semantic roles & 50–950 ramp

primary

#666E80

secondary

#A8A499

accent

#A074B4

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0D0D0F

muted

#7D7E7F

Preview Lab

Preview with #666E80

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

Preview Lab → · Contrast checker → · Palette generator →