#66B0F9#66B0F9

#66B0F9 is a light, vivid cyan. Relative luminance 0.407; OKLCH L 74.0% C 0.130 H 249.7°. Best body text is #000000 at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#66B0F9
RGB	rgb(102, 176, 249)
HSL	hsl(210, 92%, 69%)
HSV	hsv(210, 59%, 98%)
CMYK	cmyk(59%, 29.3%, 0%, 2.4%)
CIE-LAB	lab(69.97, -1.92, -43.19)
CIE-LCH	lch(69.97, 43.23, 267.46°)
OKLab	oklab(73.96% -0.0451 -0.1217)
OKLCH	oklch(73.96% 0.13 249.7)
XYZ	xyz(38.0975, 40.7115, 95.4546)
Luminance	0.4072 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B0F9 #F9AF66

analogous

#66F9F9 #66B0F9 #6667F9

triadic

#66B0F9 #F966B0 #B0F966

tetradic

#66B0F9 #F966F9 #F9AF66 #67F966

square

#66B0F9 #F966F9 #F9AF66 #67F966

split-complementary

#66B0F9 #F96667 #F9F966

monochromatic

#0973DC #2B92F7 #66B0F9 #A1CEFB #DCEDFE

Accessibility & contrast

On white

2.30

#66B0F9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.14

#66B0F9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B0F9

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B0F9	#FFFFFF	#000000	##000000
##66B0F9	1.00	2.30	9.14	9.14
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.14	21.00	1.00	1.00
##000000	9.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91B3FC

Deuteranopia (green-blind)

#7DA5F8

Tritanopia (blue-blind)

#00C1CA

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #66b0f9;
/* rgb */ color: rgb(102, 176, 249);
/* oklch */ color: oklch(74.0% 0.130 249.7);

Tailwind

colors: {
  custom: {
    50: '#9dc7fb',
    500: '#66b0f9',
    950: '#000000',
  },
}

SCSS

$custom: #66b0f9;
$custom-light: #9dc7fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66b0f9",
  "rgb": {
    "r": 102,
    "g": 176,
    "b": 249
  },
  "hsl": {
    "h": 209.796,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.73957,
    "c": 0.12976,
    "h": 249.7
  },
  "luminance": 0.40715
}

Semantic roles & 50–950 ramp

primary

#66B0F9

secondary

#F3DDC8

accent

#7200E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B0F9

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

Preview Lab → · Contrast checker → · Palette generator →