#666B97#666B97

#666B97 is a mid, moderate blue. Relative luminance 0.156; OKLCH L 54.1% C 0.069 H 278.8°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#666B97
RGB	rgb(102, 107, 151)
HSL	hsl(234, 19%, 50%)
HSV	hsv(234, 32%, 59%)
CMYK	cmyk(32.5%, 29.1%, 0%, 40.8%)
CIE-LAB	lab(46.41, 8.90, -24.56)
CIE-LCH	lch(46.41, 26.12, 289.93°)
OKLab	oklab(54.13% 0.0106 -0.0681)
OKLCH	oklch(54.13% 0.069 278.8)
XYZ	xyz(16.3216, 15.5740, 31.4183)
Luminance	0.1557 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666B97 #979266

analogous

#668497 #666B97 #7A6697

triadic

#666B97 #97666B #6B9766

tetradic

#666B97 #976684 #979266 #66977A

square

#666B97 #976684 #979266 #66977A

split-complementary

#666B97 #977A66 #849766

monochromatic

#35374E #4D5172 #666B97 #8A8EB0 #AFB1C9

Accessibility & contrast

On white

5.10

#666B97 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.11

#666B97 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666B97

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666B97	#FFFFFF	#000000	##FFFFFF
##666B97	1.00	5.10	4.11	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.11	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7099

Deuteranopia (green-blind)

#5B6C96

Tritanopia (blue-blind)

#59737A

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #666b97;
/* rgb */ color: rgb(102, 107, 151);
/* oklch */ color: oklch(54.1% 0.069 278.8);

Tailwind

colors: {
  custom: {
    50: '#9395b5',
    500: '#666b97',
    950: '#000000',
  },
}

SCSS

$custom: #666b97;
$custom-light: #9395b5;
$custom-dark: #000000;

JSON

{
  "hex": "#666b97",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 151
  },
  "hsl": {
    "h": 233.878,
    "s": 19.368,
    "l": 49.608
  },
  "oklch": {
    "l": 0.54131,
    "c": 0.06896,
    "h": 278.8
  },
  "luminance": 0.15575
}

Semantic roles & 50–950 ramp

primary

#666B97

secondary

#B8B5A1

accent

#B46CBC

background

#F9F9FB

surface

#F1F1F6

border

#CBCBD0

text

#0D0D11

muted

#7E7E80

Preview Lab

Preview with #666B97

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

Preview Lab → · Contrast checker → · Palette generator →