#666BDA#666BDA

#666BDA is a mid, vivid blue. Relative luminance 0.184; OKLCH L 58.0% C 0.166 H 277.9°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#666BDA
RGB	rgb(102, 107, 218)
HSL	hsl(237, 61%, 63%)
HSV	hsv(237, 53%, 85%)
CMYK	cmyk(53.2%, 50.9%, 0%, 14.5%)
CIE-LAB	lab(49.98, 28.93, -57.73)
CIE-LCH	lch(49.98, 64.57, 296.62°)
OKLab	oklab(58.01% 0.0229 -0.1648)
OKLCH	oklch(58.01% 0.166 277.9)
XYZ	xyz(23.3881, 18.4006, 68.6353)
Luminance	0.1840 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666BDA #DAD566

analogous

#66A5DA #666BDA #9B66DA

triadic

#666BDA #DA666B #6BDA66

tetradic

#666BDA #DA66A5 #DAD566 #66DA9B

square

#666BDA #DA66A5 #DAD566 #66DA9B

split-complementary

#666BDA #DA9B66 #A5DA66

monochromatic

#262C9F #353BCE #666BDA #979BE6 #C9CAF2

Accessibility & contrast

On white

4.49

#666BDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#666BDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666BDA

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666BDA	#FFFFFF	#000000	##000000
##666BDA	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#327CDE

Deuteranopia (green-blind)

#2172D8

Tritanopia (blue-blind)

#318498

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #666bda;
/* rgb */ color: rgb(102, 107, 218);
/* oklch */ color: oklch(58.0% 0.166 277.9);

Tailwind

colors: {
  custom: {
    50: '#9a95e6',
    500: '#666bda',
    950: '#000000',
  },
}

SCSS

$custom: #666bda;
$custom-light: #9a95e6;
$custom-dark: #000000;

JSON

{
  "hex": "#666bda",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 218
  },
  "hsl": {
    "h": 237.414,
    "s": 61.053,
    "l": 62.745
  },
  "oklch": {
    "l": 0.58012,
    "c": 0.16643,
    "h": 277.9
  },
  "luminance": 0.18402
}

Semantic roles & 50–950 ramp

primary

#666BDA

secondary

#E3E1B9

accent

#C11DC9

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #666BDA

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

Preview Lab → · Contrast checker → · Palette generator →