#669DFB#669DFB

#669DFB is a light, vivid blue. Relative luminance 0.339; OKLCH L 70.0% C 0.150 H 260.5°. Best body text is #000000 at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#669DFB
RGB	rgb(102, 157, 251)
HSL	hsl(218, 95%, 69%)
HSV	hsv(218, 59%, 98%)
CMYK	cmyk(59.4%, 37.5%, 0%, 1.6%)
CIE-LAB	lab(64.88, 9.55, -52.29)
CIE-LCH	lch(64.88, 53.16, 280.35°)
OKLab	oklab(70.01% -0.0248 -0.1484)
OKLCH	oklch(70.01% 0.15 260.5)
XYZ	xyz(34.9430, 33.9007, 95.9501)
Luminance	0.3390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669DFB #FBC466

analogous

#66E8FB #669DFB #7A66FB

triadic

#669DFB #FB669D #9DFB66

tetradic

#669DFB #FB66E8 #FBC466 #66FB7A

square

#669DFB #FB66E8 #FBC466 #66FB7A

split-complementary

#669DFB #FB7A66 #E8FB66

monochromatic

#0657E1 #2A77F9 #669DFB #A2C3FD #DDE9FE

Accessibility & contrast

On white

2.70

#669DFB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.78

#669DFB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669DFB

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669DFB	#FFFFFF	#000000	##000000
##669DFB	1.00	2.70	7.78	7.78
#FFFFFF	2.70	1.00	21.00	21.00
#000000	7.78	21.00	1.00	1.00
##000000	7.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#75A5FF

Deuteranopia (green-blind)

#6197F9

Tritanopia (blue-blind)

#00B2C0

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #669dfb;
/* rgb */ color: rgb(102, 157, 251);
/* oklch */ color: oklch(70.0% 0.150 260.5);

Tailwind

colors: {
  custom: {
    50: '#9db9fd',
    500: '#669dfb',
    950: '#000000',
  },
}

SCSS

$custom: #669dfb;
$custom-light: #9db9fd;
$custom-dark: #000000;

JSON

{
  "hex": "#669dfb",
  "rgb": {
    "r": 102,
    "g": 157,
    "b": 251
  },
  "hsl": {
    "h": 217.852,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.70012,
    "c": 0.15044,
    "h": 260.5
  },
  "luminance": 0.33904
}

Semantic roles & 50–950 ramp

primary

#669DFB

secondary

#F4E4C9

accent

#9100E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1118

muted

#7F8086

Preview Lab

Preview with #669DFB

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

Preview Lab → · Contrast checker → · Palette generator →