#666EAE#666EAE

#666EAE is a mid, moderate blue. Relative luminance 0.170; OKLCH L 55.9% C 0.099 H 277.3°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#666EAE
RGB	rgb(102, 110, 174)
HSL	hsl(233, 31%, 54%)
HSV	hsv(233, 41%, 68%)
CMYK	cmyk(41.4%, 36.8%, 0%, 31.8%)
CIE-LAB	lab(48.30, 13.62, -35.12)
CIE-LCH	lch(48.30, 37.66, 291.19°)
OKLab	oklab(55.94% 0.0126 -0.0986)
OKLCH	oklch(55.94% 0.099 277.3)
XYZ	xyz(18.6931, 17.0318, 42.3387)
Luminance	0.1703 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666EAE #AEA666

analogous

#6692AE #666EAE #8266AE

triadic

#666EAE #AE666E #6EAE66

tetradic

#666EAE #AE6692 #AEA666 #66AE82

square

#666EAE #AE6692 #AEA666 #66AE82

split-complementary

#666EAE #AE8266 #92AE66

monochromatic

#353A64 #4A528C #666EAE #8E94C3 #B6BAD8

Accessibility & contrast

On white

4.77

#666EAE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#666EAE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666EAE

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666EAE	#FFFFFF	#000000	##FFFFFF
##666EAE	1.00	4.77	4.41	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5876B1

Deuteranopia (green-blind)

#5370AD

Tritanopia (blue-blind)

#4F7B86

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #666eae;
/* rgb */ color: rgb(102, 110, 174);
/* oklch */ color: oklch(55.9% 0.099 277.3);

Tailwind

colors: {
  custom: {
    50: '#9597c6',
    500: '#666eae',
    950: '#000000',
  },
}

SCSS

$custom: #666eae;
$custom-light: #9597c6;
$custom-dark: #000000;

JSON

{
  "hex": "#666eae",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 174
  },
  "hsl": {
    "h": 233.333,
    "s": 30.769,
    "l": 54.118
  },
  "oklch": {
    "l": 0.55939,
    "c": 0.09942,
    "h": 277.3
  },
  "luminance": 0.17033
}

Semantic roles & 50–950 ramp

primary

#666EAE

secondary

#C7C4A9

accent

#BC61C7

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #666EAE

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

Preview Lab → · Contrast checker → · Palette generator →