#66B2F9#66B2F9

#66B2F9 is a light, vivid cyan. Relative luminance 0.415; OKLCH L 74.4% C 0.128 H 248.4°. Best body text is #000000 at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#66B2F9
RGB	rgb(102, 178, 249)
HSL	hsl(209, 92%, 69%)
HSV	hsv(209, 59%, 98%)
CMYK	cmyk(59%, 28.5%, 0%, 2.4%)
CIE-LAB	lab(70.53, -3.03, -42.32)
CIE-LCH	lch(70.53, 42.43, 265.91°)
OKLab	oklab(74.39% -0.0471 -0.1192)
OKLCH	oklch(74.39% 0.128 248.4)
XYZ	xyz(38.4925, 41.5016, 95.5863)
Luminance	0.4150 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B2F9 #F9AD66

analogous

#66F9F7 #66B2F9 #6669F9

triadic

#66B2F9 #F966B2 #B2F966

tetradic

#66B2F9 #F766F9 #F9AD66 #69F966

square

#66B2F9 #F766F9 #F9AD66 #69F966

split-complementary

#66B2F9 #F96669 #F9F766

monochromatic

#0976DC #2B94F7 #66B2F9 #A1D0FB #DCEDFE

Accessibility & contrast

On white

2.26

#66B2F9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.30

#66B2F9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B2F9

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B2F9	#FFFFFF	#000000	##000000
##66B2F9	1.00	2.26	9.30	9.30
#FFFFFF	2.26	1.00	21.00	21.00
#000000	9.30	21.00	1.00	1.00
##000000	9.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94B5FC

Deuteranopia (green-blind)

#80A6F8

Tritanopia (blue-blind)

#00C3CB

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #66b2f9;
/* rgb */ color: rgb(102, 178, 249);
/* oklch */ color: oklch(74.4% 0.128 248.4);

Tailwind

colors: {
  custom: {
    50: '#9dc8fb',
    500: '#66b2f9',
    950: '#000000',
  },
}

SCSS

$custom: #66b2f9;
$custom-light: #9dc8fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66b2f9",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 249
  },
  "hsl": {
    "h": 208.98,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.74391,
    "c": 0.12815,
    "h": 248.4
  },
  "luminance": 0.41505
}

Semantic roles & 50–950 ramp

primary

#66B2F9

secondary

#F3DDC8

accent

#6F00E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B2F9

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

Preview Lab → · Contrast checker → · Palette generator →