#669FF3#669FF3

#669FF3 is a light, vivid blue. Relative luminance 0.341; OKLCH L 70.0% C 0.138 H 258.0°. Best body text is #000000 at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#669FF3
RGB	rgb(102, 159, 243)
HSL	hsl(216, 85%, 68%)
HSV	hsv(216, 58%, 95%)
CMYK	cmyk(58%, 34.6%, 0%, 4.7%)
CIE-LAB	lab(65.03, 5.83, -47.68)
CIE-LCH	lch(65.03, 48.03, 276.97°)
OKLab	oklab(70% -0.0288 -0.1349)
OKLCH	oklch(70% 0.138 258)
XYZ	xyz(34.0496, 34.0892, 89.5622)
Luminance	0.3409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669FF3 #F3BA66

analogous

#66E5F3 #669FF3 #7466F3

triadic

#669FF3 #F3669F #9FF366

tetradic

#669FF3 #F366E5 #F3BA66 #66F374

square

#669FF3 #F366E5 #F3BA66 #66F374

split-complementary

#669FF3 #F37466 #E5F366

monochromatic

#105DCE #2D7BEF #669FF3 #9FC3F7 #D7E6FC

Accessibility & contrast

On white

2.69

#669FF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.82

#669FF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669FF3

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669FF3	#FFFFFF	#000000	##000000
##669FF3	1.00	2.69	7.82	7.82
#FFFFFF	2.69	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)

#7CA5F6

Deuteranopia (green-blind)

#6A98F1

Tritanopia (blue-blind)

#00B2BE

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #669ff3;
/* rgb */ color: rgb(102, 159, 243);
/* oklch */ color: oklch(70.0% 0.138 258.0);

Tailwind

colors: {
  custom: {
    50: '#9cbbf7',
    500: '#669ff3',
    950: '#000000',
  },
}

SCSS

$custom: #669ff3;
$custom-light: #9cbbf7;
$custom-dark: #000000;

JSON

{
  "hex": "#669ff3",
  "rgb": {
    "r": 102,
    "g": 159,
    "b": 243
  },
  "hsl": {
    "h": 215.745,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.7,
    "c": 0.13792,
    "h": 258
  },
  "luminance": 0.34092
}

Semantic roles & 50–950 ramp

primary

#669FF3

secondary

#F0DFC5

accent

#8804E2

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #669FF3

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

Preview Lab → · Contrast checker → · Palette generator →