#668DEE#668DEE

#668DEE is a light, vivid blue. Relative luminance 0.280; OKLCH L 66.0% C 0.151 H 265.9°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#668DEE
RGB	rgb(102, 141, 238)
HSL	hsl(223, 80%, 67%)
HSV	hsv(223, 57%, 93%)
CMYK	cmyk(57.1%, 40.8%, 0%, 6.7%)
CIE-LAB	lab(59.93, 14.78, -53.01)
CIE-LCH	lch(59.93, 55.03, 285.57°)
OKLab	oklab(65.96% -0.0108 -0.1507)
OKLCH	oklch(65.96% 0.151 265.9)
XYZ	xyz(30.4318, 28.0451, 84.6819)
Luminance	0.2805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668DEE #EEC766

analogous

#66D1EE #668DEE #8366EE

triadic

#668DEE #EE668D #8DEE66

tetradic

#668DEE #EE66D1 #EEC766 #66EE83

square

#668DEE #EE66D1 #EEC766 #66EE83

split-complementary

#668DEE #EE8366 #D1EE66

monochromatic

#1648C4 #2F64E8 #668DEE #9DB6F4 #D4DFFA

Accessibility & contrast

On white

3.18

#668DEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.61

#668DEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668DEE

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668DEE	#FFFFFF	#000000	##000000
##668DEE	1.00	3.18	6.61	6.61
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.61	21.00	1.00	1.00
##000000	6.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6397F2

Deuteranopia (green-blind)

#518BEC

Tritanopia (blue-blind)

#00A2B2

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #668dee;
/* rgb */ color: rgb(102, 141, 238);
/* oklch */ color: oklch(66.0% 0.151 265.9);

Tailwind

colors: {
  custom: {
    50: '#9badf4',
    500: '#668dee',
    950: '#000000',
  },
}

SCSS

$custom: #668dee;
$custom-light: #9badf4;
$custom-dark: #000000;

JSON

{
  "hex": "#668dee",
  "rgb": {
    "r": 102,
    "g": 141,
    "b": 238
  },
  "hsl": {
    "h": 222.794,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.65963,
    "c": 0.15105,
    "h": 265.9
  },
  "luminance": 0.28048
}

Semantic roles & 50–950 ramp

primary

#668DEE

secondary

#EEE1C2

accent

#A009DC

background

#FAFAFE

surface

#F4F4FD

border

#CECED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #668DEE

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

Preview Lab → · Contrast checker → · Palette generator →