#666D97#666D97

#666D97 is a mid, moderate blue. Relative luminance 0.160; OKLCH L 54.6% C 0.066 H 276.7°. Best body text is #FFFFFF at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#666D97
RGB	rgb(102, 109, 151)
HSL	hsl(231, 19%, 50%)
HSV	hsv(231, 32%, 59%)
CMYK	cmyk(32.5%, 27.8%, 0%, 40.8%)
CIE-LAB	lab(46.97, 7.69, -23.69)
CIE-LCH	lch(46.97, 24.91, 287.98°)
OKLab	oklab(54.56% 0.0077 -0.0657)
OKLCH	oklch(54.56% 0.066 276.7)
XYZ	xyz(16.5325, 15.9959, 31.4886)
Luminance	0.1600 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666D97 #979066

analogous

#668697 #666D97 #786697

triadic

#666D97 #97666D #6D9766

tetradic

#666D97 #976686 #979066 #669778

square

#666D97 #976686 #979066 #669778

split-complementary

#666D97 #977866 #869766

monochromatic

#35384E #4D5372 #666D97 #8A90B0 #AFB2C9

Accessibility & contrast

On white

5.00

#666D97 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.20

#666D97 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666D97

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666D97	#FFFFFF	#000000	##FFFFFF
##666D97	1.00	5.00	4.20	5.00
#FFFFFF	5.00	1.00	21.00	1.00
#000000	4.20	21.00	1.00	21.00
##FFFFFF	5.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607199

Deuteranopia (green-blind)

#5D6E96

Tritanopia (blue-blind)

#59757C

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #666d97;
/* rgb */ color: rgb(102, 109, 151);
/* oklch */ color: oklch(54.6% 0.066 276.7);

Tailwind

colors: {
  custom: {
    50: '#9396b5',
    500: '#666d97',
    950: '#000000',
  },
}

SCSS

$custom: #666d97;
$custom-light: #9396b5;
$custom-dark: #000000;

JSON

{
  "hex": "#666d97",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 151
  },
  "hsl": {
    "h": 231.429,
    "s": 19.368,
    "l": 49.608
  },
  "oklch": {
    "l": 0.54564,
    "c": 0.06613,
    "h": 276.7
  },
  "luminance": 0.15996
}

Semantic roles & 50–950 ramp

primary

#666D97

secondary

#B8B4A1

accent

#B16CBC

background

#F9F9FB

surface

#F1F2F6

border

#CBCCD0

text

#0D0D11

muted

#7E7E80

Preview Lab

Preview with #666D97

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

Preview Lab → · Contrast checker → · Palette generator →