#669EFF#669EFF

#669EFF is a light, vivid blue. Relative luminance 0.345; OKLCH L 70.4% C 0.155 H 260.7°. Best body text is #000000 at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#669EFF
RGB	rgb(102, 158, 255)
HSL	hsl(218, 100%, 70%)
HSV	hsv(218, 60%, 100%)
CMYK	cmyk(60%, 38%, 0%, 0%)
CIE-LAB	lab(65.35, 10.26, -53.73)
CIE-LCH	lch(65.35, 54.70, 280.81°)
OKLab	oklab(70.44% -0.025 -0.1526)
OKLCH	oklch(70.44% 0.155 260.7)
XYZ	xyz(35.7500, 34.4953, 99.3626)
Luminance	0.3450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#669EFF #FFC766

analogous

#66EBFF #669EFF #7A66FF

triadic

#669EFF #FF669E #9EFF66

tetradic

#669EFF #FF66EB #FFC766 #66FF7A

square

#669EFF #FF66EB #FFC766 #66FF7A

split-complementary

#669EFF #FF7A66 #EBFF66

monochromatic

#0056EB #2977FF #669EFF #A3C5FF #E0ECFF

Accessibility & contrast

On white

2.66

#669EFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.90

#669EFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #669EFF

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##669EFF	#FFFFFF	#000000	##000000
##669EFF	1.00	2.66	7.90	7.90
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.90	21.00	1.00	1.00
##000000	7.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#74A6FF

Deuteranopia (green-blind)

#5F98FD

Tritanopia (blue-blind)

#00B4C2

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #669eff;
/* rgb */ color: rgb(102, 158, 255);
/* oklch */ color: oklch(70.4% 0.155 260.7);

Tailwind

colors: {
  custom: {
    50: '#9dbaff',
    500: '#669eff',
    950: '#000000',
  },
}

SCSS

$custom: #669eff;
$custom-light: #9dbaff;
$custom-dark: #000000;

JSON

{
  "hex": "#669eff",
  "rgb": {
    "r": 102,
    "g": 158,
    "b": 255
  },
  "hsl": {
    "h": 218.039,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.70442,
    "c": 0.1546,
    "h": 260.7
  },
  "luminance": 0.34499
}

Semantic roles & 50–950 ramp

primary

#669EFF

secondary

#F6E6CB

accent

#9100E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1118

muted

#7F8086

Preview Lab

Preview with #669EFF

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

Preview Lab → · Contrast checker → · Palette generator →