#669DF3#669DF3

#669DF3 is a light, vivid blue. Relative luminance 0.334; OKLCH L 69.6% C 0.140 H 259.0°. Best body text is #000000 at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#669DF3
RGB	rgb(102, 157, 243)
HSL	hsl(217, 85%, 68%)
HSV	hsv(217, 58%, 95%)
CMYK	cmyk(58%, 35.4%, 0%, 4.7%)
CIE-LAB	lab(64.49, 6.98, -48.54)
CIE-LCH	lch(64.49, 49.04, 278.19°)
OKLab	oklab(69.58% -0.0266 -0.1374)
OKLCH	oklch(69.58% 0.14 259)
XYZ	xyz(33.7085, 33.4069, 89.4485)
Luminance	0.3341 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669DF3 #F3BC66

analogous

#66E3F3 #669DF3 #7666F3

triadic

#669DF3 #F3669D #9DF366

tetradic

#669DF3 #F366E3 #F3BC66 #66F376

square

#669DF3 #F366E3 #F3BC66 #66F376

split-complementary

#669DF3 #F37666 #E3F366

monochromatic

#105ACE #2D79EF #669DF3 #9FC1F7 #D7E6FC

Accessibility & contrast

On white

2.73

#669DF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.68

#669DF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669DF3

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669DF3	#FFFFFF	#000000	##000000
##669DF3	1.00	2.73	7.68	7.68
#FFFFFF	2.73	1.00	21.00	21.00
#000000	7.68	21.00	1.00	1.00
##000000	7.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#79A4F7

Deuteranopia (green-blind)

#6796F1

Tritanopia (blue-blind)

#00B0BD

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #669df3;
/* rgb */ color: rgb(102, 157, 243);
/* oklch */ color: oklch(69.6% 0.140 259.0);

Tailwind

colors: {
  custom: {
    50: '#9cb9f7',
    500: '#669df3',
    950: '#000000',
  },
}

SCSS

$custom: #669df3;
$custom-light: #9cb9f7;
$custom-dark: #000000;

JSON

{
  "hex": "#669df3",
  "rgb": {
    "r": 102,
    "g": 157,
    "b": 243
  },
  "hsl": {
    "h": 216.596,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.69576,
    "c": 0.13998,
    "h": 259
  },
  "luminance": 0.3341
}

Semantic roles & 50–950 ramp

primary

#669DF3

secondary

#F0DFC5

accent

#8B04E2

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #669DF3

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

Preview Lab → · Contrast checker → · Palette generator →