#666FFD#666FFD

#666FFD is a mid, highly saturated blue. Relative luminance 0.213; OKLCH L 61.2% C 0.208 H 275.6°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#666FFD
RGB	rgb(102, 111, 253)
HSL	hsl(236, 97%, 70%)
HSV	hsv(236, 60%, 99%)
CMYK	cmyk(59.7%, 56.1%, 0%, 0.8%)
CIE-LAB	lab(53.26, 37.65, -72.03)
CIE-LCH	lch(53.26, 81.28, 297.59°)
OKLab	oklab(61.2% 0.0205 -0.2069)
OKLCH	oklch(61.2% 0.208 275.6)
XYZ	xyz(28.8878, 21.2833, 95.4952)
Luminance	0.2129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666FFD #FDF466

analogous

#66BAFD #666FFD #A966FD

triadic

#666FFD #FD666F #6FFD66

tetradic

#666FFD #FD66BA #FDF466 #66FDA9

square

#666FFD #FD66BA #FDF466 #66FDA9

split-complementary

#666FFD #FDA966 #BAFD66

monochromatic

#0311E6 #2A36FC #666FFD #A2A8FE #DFE1FF

Accessibility & contrast

On white

3.99

#666FFD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#666FFD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666FFD

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666FFD	#FFFFFF	#000000	##000000
##666FFD	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0086FF

Deuteranopia (green-blind)

#0079FA

Tritanopia (blue-blind)

#0091AB

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #666ffd;
/* rgb */ color: rgb(102, 111, 253);
/* oklch */ color: oklch(61.2% 0.208 275.6);

Tailwind

colors: {
  custom: {
    50: '#9f98ff',
    500: '#666ffd',
    950: '#000000',
  },
}

SCSS

$custom: #666ffd;
$custom-light: #9f98ff;
$custom-dark: #000000;

JSON

{
  "hex": "#666ffd",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 253
  },
  "hsl": {
    "h": 236.424,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.61199,
    "c": 0.20789,
    "h": 275.6
  },
  "luminance": 0.21286
}

Semantic roles & 50–950 ramp

primary

#666FFD

secondary

#F5F2CA

accent

#D800E6

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #666FFD

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

Preview Lab → · Contrast checker → · Palette generator →