#666DB2#666DB2

#666DB2 is a mid, moderate blue. Relative luminance 0.170; OKLCH L 56.0% C 0.107 H 278.0°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#666DB2
RGB	rgb(102, 109, 178)
HSL	hsl(234, 33%, 55%)
HSV	hsv(234, 43%, 70%)
CMYK	cmyk(42.7%, 38.8%, 0%, 30.2%)
CIE-LAB	lab(48.23, 15.41, -37.56)
CIE-LCH	lch(48.23, 40.59, 292.31°)
OKLab	oklab(55.95% 0.0148 -0.1057)
OKLCH	oklch(55.95% 0.107 278)
XYZ	xyz(18.9816, 16.9755, 44.3873)
Luminance	0.1698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666DB2 #B2AB66

analogous

#6693B2 #666DB2 #8566B2

triadic

#666DB2 #B2666D #6DB266

tetradic

#666DB2 #B26693 #B2AB66 #66B285

square

#666DB2 #B26693 #B2AB66 #66B285

split-complementary

#666DB2 #B28566 #93B266

monochromatic

#353A69 #495092 #666DB2 #8F94C6 #B7BBDB

Accessibility & contrast

On white

4.78

#666DB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#666DB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666DB2

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666DB2	#FFFFFF	#000000	##FFFFFF
##666DB2	1.00	4.78	4.40	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5576B5

Deuteranopia (green-blind)

#4F70B0

Tritanopia (blue-blind)

#4E7B87

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #666db2;
/* rgb */ color: rgb(102, 109, 178);
/* oklch */ color: oklch(56.0% 0.107 278.0);

Tailwind

colors: {
  custom: {
    50: '#9596c9',
    500: '#666db2',
    950: '#000000',
  },
}

SCSS

$custom: #666db2;
$custom-light: #9596c9;
$custom-dark: #000000;

JSON

{
  "hex": "#666db2",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 178
  },
  "hsl": {
    "h": 234.474,
    "s": 33.043,
    "l": 54.902
  },
  "oklch": {
    "l": 0.5595,
    "c": 0.10675,
    "h": 278
  },
  "luminance": 0.16976
}

Semantic roles & 50–950 ramp

primary

#666DB2

secondary

#CAC7AA

accent

#BF5FC9

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #666DB2

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

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