#666DCE#666DCE

#666DCE is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.6% C 0.147 H 277.6°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#666DCE
RGB	rgb(102, 109, 206)
HSL	hsl(236, 51%, 60%)
HSV	hsv(236, 50%, 81%)
CMYK	cmyk(50.5%, 47.1%, 0%, 19.2%)
CIE-LAB	lab(49.76, 23.95, -51.26)
CIE-LCH	lch(49.76, 56.58, 295.04°)
OKLab	oklab(57.61% 0.0195 -0.1458)
OKLCH	oklch(57.61% 0.147 277.6)
XYZ	xyz(22.0852, 18.2170, 60.7330)
Luminance	0.1822 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666DCE #CEC766

analogous

#66A1CE #666DCE #9366CE

triadic

#666DCE #CE666D #6DCE66

tetradic

#666DCE #CE66A1 #CEC766 #66CE93

square

#666DCE #CE66A1 #CEC766 #66CE93

split-complementary

#666DCE #CE9366 #A1CE66

monochromatic

#2D338D #3C44BB #666DCE #9499DD #C3C5EC

Accessibility & contrast

On white

4.52

#666DCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#666DCE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666DCE

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666DCE	#FFFFFF	#000000	##000000
##666DCE	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#427BD2

Deuteranopia (green-blind)

#3872CC

Tritanopia (blue-blind)

#3C8293

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #666dce;
/* rgb */ color: rgb(102, 109, 206);
/* oklch */ color: oklch(57.6% 0.147 277.6);

Tailwind

colors: {
  custom: {
    50: '#9896dd',
    500: '#666dce',
    950: '#000000',
  },
}

SCSS

$custom: #666dce;
$custom-light: #9896dd;
$custom-dark: #000000;

JSON

{
  "hex": "#666dce",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 206
  },
  "hsl": {
    "h": 235.962,
    "s": 51.485,
    "l": 60.392
  },
  "oklch": {
    "l": 0.57612,
    "c": 0.1471,
    "h": 277.6
  },
  "luminance": 0.18218
}

Semantic roles & 50–950 ramp

primary

#666DCE

secondary

#DCD9B4

accent

#B527BF

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #666DCE

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

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