#669EF9#669EF9

#669EF9 is a light, vivid blue. Relative luminance 0.341; OKLCH L 70.1% C 0.147 H 259.7°. Best body text is #000000 at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#669EF9
RGB	rgb(102, 158, 249)
HSL	hsl(217, 92%, 69%)
HSV	hsv(217, 59%, 98%)
CMYK	cmyk(59%, 36.5%, 0%, 2.4%)
CIE-LAB	lab(65.05, 8.33, -50.93)
CIE-LCH	lch(65.05, 51.61, 279.28°)
OKLab	oklab(70.11% -0.0263 -0.1444)
OKLCH	oklch(70.11% 0.147 259.7)
XYZ	xyz(34.7992, 34.1150, 94.3552)
Luminance	0.3412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669EF9 #F9C166

analogous

#66E8F9 #669EF9 #7866F9

triadic

#669EF9 #F9669E #9EF966

tetradic

#669EF9 #F966E8 #F9C166 #66F978

square

#669EF9 #F966E8 #F9C166 #66F978

split-complementary

#669EF9 #F97866 #E8F966

monochromatic

#0959DC #2B79F7 #669EF9 #A1C3FB #DCE9FE

Accessibility & contrast

On white

2.68

#669EF9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.82

#669EF9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669EF9

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669EF9	#FFFFFF	#000000	##000000
##669EF9	1.00	2.68	7.82	7.82
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.82	21.00	1.00	1.00
##000000	7.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#77A5FD

Deuteranopia (green-blind)

#6498F7

Tritanopia (blue-blind)

#00B2C0

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #669ef9;
/* rgb */ color: rgb(102, 158, 249);
/* oklch */ color: oklch(70.1% 0.147 259.7);

Tailwind

colors: {
  custom: {
    50: '#9cbafb',
    500: '#669ef9',
    950: '#000000',
  },
}

SCSS

$custom: #669ef9;
$custom-light: #9cbafb;
$custom-dark: #000000;

JSON

{
  "hex": "#669ef9",
  "rgb": {
    "r": 102,
    "g": 158,
    "b": 249
  },
  "hsl": {
    "h": 217.143,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.70111,
    "c": 0.14676,
    "h": 259.7
  },
  "luminance": 0.34118
}

Semantic roles & 50–950 ramp

primary

#669EF9

secondary

#F3E3C8

accent

#8E00E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #669EF9

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

Preview Lab → · Contrast checker → · Palette generator →