#668AFB#668AFB

#668AFB is a light, vivid blue. Relative luminance 0.280; OKLCH L 66.1% C 0.172 H 268.2°. Best body text is #000000 at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#668AFB
RGB	rgb(102, 138, 251)
HSL	hsl(226, 95%, 69%)
HSV	hsv(226, 59%, 98%)
CMYK	cmyk(59.4%, 45%, 0%, 1.6%)
CIE-LAB	lab(59.86, 20.78, -60.30)
CIE-LCH	lch(59.86, 63.78, 289.01°)
OKLab	oklab(66.14% -0.0055 -0.1721)
OKLCH	oklch(66.14% 0.172 268.2)
XYZ	xyz(31.9747, 27.9641, 94.9607)
Luminance	0.2797 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#668AFB #FBD766

analogous

#66D5FB #668AFB #8D66FB

triadic

#668AFB #FB668A #8AFB66

tetradic

#668AFB #FB66D5 #FBD766 #66FB8D

square

#668AFB #FB66D5 #FBD766 #66FB8D

split-complementary

#668AFB #FB8D66 #D5FB66

monochromatic

#063BE1 #2A5CF9 #668AFB #A2B8FD #DDE5FE

Accessibility & contrast

On white

3.19

#668AFB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.59

#668AFB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #668AFB

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##668AFB	#FFFFFF	#000000	##000000
##668AFB	1.00	3.19	6.59	6.59
#FFFFFF	3.19	1.00	21.00	21.00
#000000	6.59	21.00	1.00	1.00
##000000	6.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5597FF

Deuteranopia (green-blind)

#3E8AF9

Tritanopia (blue-blind)

#00A3B6

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #668afb;
/* rgb */ color: rgb(102, 138, 251);
/* oklch */ color: oklch(66.1% 0.172 268.2);

Tailwind

colors: {
  custom: {
    50: '#9dabfd',
    500: '#668afb',
    950: '#000000',
  },
}

SCSS

$custom: #668afb;
$custom-light: #9dabfd;
$custom-dark: #000000;

JSON

{
  "hex": "#668afb",
  "rgb": {
    "r": 102,
    "g": 138,
    "b": 251
  },
  "hsl": {
    "h": 225.503,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.66138,
    "c": 0.17216,
    "h": 268.2
  },
  "luminance": 0.27967
}

Semantic roles & 50–950 ramp

primary

#668AFB

secondary

#F4EAC9

accent

#AE00E6

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1018

muted

#7F7F86

Preview Lab

Preview with #668AFB

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

Preview Lab → · Contrast checker → · Palette generator →