#669FFB#669FFB

#669FFB is a light, vivid blue. Relative luminance 0.346; OKLCH L 70.4% C 0.148 H 259.6°. Best body text is #000000 at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#669FFB
RGB	rgb(102, 159, 251)
HSL	hsl(217, 95%, 69%)
HSV	hsv(217, 59%, 98%)
CMYK	cmyk(59.4%, 36.7%, 0%, 1.6%)
CIE-LAB	lab(65.42, 8.39, -51.44)
CIE-LCH	lch(65.42, 52.12, 279.26°)
OKLab	oklab(70.43% -0.0269 -0.1459)
OKLCH	oklch(70.43% 0.148 259.6)
XYZ	xyz(35.2841, 34.5830, 96.0639)
Luminance	0.3459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669FFB #FBC266

analogous

#66E9FB #669FFB #7866FB

triadic

#669FFB #FB669F #9FFB66

tetradic

#669FFB #FB66E9 #FBC266 #66FB78

square

#669FFB #FB66E9 #FBC266 #66FB78

split-complementary

#669FFB #FB7866 #E9FB66

monochromatic

#065AE1 #2A7AF9 #669FFB #A2C4FD #DDEAFE

Accessibility & contrast

On white

2.65

#669FFB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.92

#669FFB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669FFB

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669FFB	#FFFFFF	#000000	##000000
##669FFB	1.00	2.65	7.92	7.92
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.92	21.00	1.00	1.00
##000000	7.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#78A6FF

Deuteranopia (green-blind)

#6498F9

Tritanopia (blue-blind)

#00B4C1

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #669ffb;
/* rgb */ color: rgb(102, 159, 251);
/* oklch */ color: oklch(70.4% 0.148 259.6);

Tailwind

colors: {
  custom: {
    50: '#9dbbfd',
    500: '#669ffb',
    950: '#000000',
  },
}

SCSS

$custom: #669ffb;
$custom-light: #9dbbfd;
$custom-dark: #000000;

JSON

{
  "hex": "#669ffb",
  "rgb": {
    "r": 102,
    "g": 159,
    "b": 251
  },
  "hsl": {
    "h": 217.047,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.7043,
    "c": 0.14832,
    "h": 259.6
  },
  "luminance": 0.34586
}

Semantic roles & 50–950 ramp

primary

#669FFB

secondary

#F4E3C9

accent

#8E00E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #669FFB

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

Preview Lab → · Contrast checker → · Palette generator →