#666FDC#666FDC

#666FDC is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.9% C 0.164 H 276.6°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#666FDC
RGB	rgb(102, 111, 220)
HSL	hsl(235, 63%, 63%)
HSV	hsv(235, 54%, 86%)
CMYK	cmyk(53.6%, 49.5%, 0%, 13.7%)
CIE-LAB	lab(51.11, 27.13, -57.05)
CIE-LCH	lch(51.11, 63.17, 295.43°)
OKLab	oklab(58.9% 0.0188 -0.1628)
OKLCH	oklch(58.9% 0.164 276.6)
XYZ	xyz(24.0781, 19.3594, 70.1642)
Luminance	0.1936 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666FDC #DCD366

analogous

#66AADC #666FDC #9866DC

triadic

#666FDC #DC666F #6FDC66

tetradic

#666FDC #DC66AA #DCD366 #66DC98

square

#666FDC #DC66AA #DCD366 #66DC98

split-complementary

#666FDC #DC9866 #AADC66

monochromatic

#252FA2 #3440D1 #666FDC #989EE7 #CACDF3

Accessibility & contrast

On white

4.31

#666FDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#666FDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666FDC

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666FDC	#FFFFFF	#000000	##000000
##666FDC	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#397FE0

Deuteranopia (green-blind)

#2975DA

Tritanopia (blue-blind)

#2D879B

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #666fdc;
/* rgb */ color: rgb(102, 111, 220);
/* oklch */ color: oklch(58.9% 0.164 276.6);

Tailwind

colors: {
  custom: {
    50: '#9a98e7',
    500: '#666fdc',
    950: '#000000',
  },
}

SCSS

$custom: #666fdc;
$custom-light: #9a98e7;
$custom-dark: #000000;

JSON

{
  "hex": "#666fdc",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 220
  },
  "hsl": {
    "h": 235.424,
    "s": 62.766,
    "l": 63.137
  },
  "oklch": {
    "l": 0.589,
    "c": 0.16389,
    "h": 276.6
  },
  "luminance": 0.19361
}

Semantic roles & 50–950 ramp

primary

#666FDC

secondary

#E4E1BA

accent

#BD1BCB

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #666FDC

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

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