#669EF3#669EF3

#669EF3 is a light, vivid blue. Relative luminance 0.338; OKLCH L 69.8% C 0.139 H 258.5°. Best body text is #000000 at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#669EF3
RGB	rgb(102, 158, 243)
HSL	hsl(216, 85%, 68%)
HSV	hsv(216, 58%, 95%)
CMYK	cmyk(58%, 35%, 0%, 4.7%)
CIE-LAB	lab(64.76, 6.40, -48.11)
CIE-LCH	lch(64.76, 48.53, 277.58°)
OKLab	oklab(69.79% -0.0277 -0.1362)
OKLCH	oklch(69.79% 0.139 258.5)
XYZ	xyz(33.8783, 33.7467, 89.5051)
Luminance	0.3375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669EF3 #F3BB66

analogous

#66E5F3 #669EF3 #7466F3

triadic

#669EF3 #F3669E #9EF366

tetradic

#669EF3 #F366E5 #F3BB66 #66F374

square

#669EF3 #F366E5 #F3BB66 #66F374

split-complementary

#669EF3 #F37466 #E5F366

monochromatic

#105CCE #2D7AEF #669EF3 #9FC2F7 #D7E6FC

Accessibility & contrast

On white

2.71

#669EF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.75

#669EF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669EF3

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669EF3	#FFFFFF	#000000	##000000
##669EF3	1.00	2.71	7.75	7.75
#FFFFFF	2.71	1.00	21.00	21.00
#000000	7.75	21.00	1.00	1.00
##000000	7.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7BA4F7

Deuteranopia (green-blind)

#6897F1

Tritanopia (blue-blind)

#00B1BD

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #669ef3;
/* rgb */ color: rgb(102, 158, 243);
/* oklch */ color: oklch(69.8% 0.139 258.5);

Tailwind

colors: {
  custom: {
    50: '#9cbaf7',
    500: '#669ef3',
    950: '#000000',
  },
}

SCSS

$custom: #669ef3;
$custom-light: #9cbaf7;
$custom-dark: #000000;

JSON

{
  "hex": "#669ef3",
  "rgb": {
    "r": 102,
    "g": 158,
    "b": 243
  },
  "hsl": {
    "h": 216.17,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.69788,
    "c": 0.13895,
    "h": 258.5
  },
  "luminance": 0.3375
}

Semantic roles & 50–950 ramp

primary

#669EF3

secondary

#F0DFC5

accent

#8A04E2

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #669EF3

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

Preview Lab → · Contrast checker → · Palette generator →