#669FFF#669FFF

#669FFF is a light, vivid blue. Relative luminance 0.348; OKLCH L 70.7% C 0.154 H 260.3°. Best body text is #000000 at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#669FFF
RGB	rgb(102, 159, 255)
HSL	hsl(218, 100%, 70%)
HSV	hsv(218, 60%, 100%)
CMYK	cmyk(60%, 37.6%, 0%, 0%)
CIE-LAB	lab(65.62, 9.68, -53.30)
CIE-LCH	lch(65.62, 54.17, 280.29°)
OKLab	oklab(70.65% -0.026 -0.1513)
OKLCH	oklch(70.65% 0.154 260.3)
XYZ	xyz(35.9213, 34.8379, 99.4197)
Luminance	0.3484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669FFF #FFC666

analogous

#66ECFF #669FFF #7966FF

triadic

#669FFF #FF669F #9FFF66

tetradic

#669FFF #FF66EC #FFC666 #66FF79

square

#669FFF #FF66EC #FFC666 #66FF79

split-complementary

#669FFF #FF7966 #ECFF66

monochromatic

#0057EB #2979FF #669FFF #A3C5FF #E0ECFF

Accessibility & contrast

On white

2.64

#669FFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.97

#669FFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669FFF

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669FFF	#FFFFFF	#000000	##000000
##669FFF	1.00	2.64	7.97	7.97
#FFFFFF	2.64	1.00	21.00	21.00
#000000	7.97	21.00	1.00	1.00
##000000	7.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#76A7FF

Deuteranopia (green-blind)

#6199FD

Tritanopia (blue-blind)

#00B5C3

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #669fff;
/* rgb */ color: rgb(102, 159, 255);
/* oklch */ color: oklch(70.7% 0.154 260.3);

Tailwind

colors: {
  custom: {
    50: '#9dbaff',
    500: '#669fff',
    950: '#000000',
  },
}

SCSS

$custom: #669fff;
$custom-light: #9dbaff;
$custom-dark: #000000;

JSON

{
  "hex": "#669fff",
  "rgb": {
    "r": 102,
    "g": 159,
    "b": 255
  },
  "hsl": {
    "h": 217.647,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.7065,
    "c": 0.15353,
    "h": 260.3
  },
  "luminance": 0.34841
}

Semantic roles & 50–950 ramp

primary

#669FFF

secondary

#F6E6CB

accent

#9000E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1118

muted

#7F8086

Preview Lab

Preview with #669FFF

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

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