#66B2FB#66B2FB

#66B2FB is a light, vivid cyan. Relative luminance 0.416; OKLCH L 74.5% C 0.130 H 249.1°. Best body text is #000000 at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#66B2FB
RGB	rgb(102, 178, 251)
HSL	hsl(209, 95%, 69%)
HSV	hsv(209, 59%, 98%)
CMYK	cmyk(59.4%, 29.1%, 0%, 1.6%)
CIE-LAB	lab(70.61, -2.40, -43.27)
CIE-LCH	lch(70.61, 43.33, 266.82°)
OKLab	oklab(74.49% -0.0466 -0.1219)
OKLCH	oklch(74.49% 0.13 249.1)
XYZ	xyz(38.8061, 41.6270, 97.2379)
Luminance	0.4163 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B2FB #FBAF66

analogous

#66FBF9 #66B2FB #6668FB

triadic

#66B2FB #FB66B2 #B2FB66

tetradic

#66B2FB #F966FB #FBAF66 #68FB66

square

#66B2FB #F966FB #FBAF66 #68FB66

split-complementary

#66B2FB #FB6668 #FBF966

monochromatic

#0676E1 #2A94F9 #66B2FB #A2D0FD #DDEEFE

Accessibility & contrast

On white

2.25

#66B2FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.33

#66B2FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B2FB

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B2FB	#FFFFFF	#000000	##000000
##66B2FB	1.00	2.25	9.33	9.33
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.33	21.00	1.00	1.00
##000000	9.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93B5FE

Deuteranopia (green-blind)

#7FA6FA

Tritanopia (blue-blind)

#00C3CC

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #66b2fb;
/* rgb */ color: rgb(102, 178, 251);
/* oklch */ color: oklch(74.5% 0.130 249.1);

Tailwind

colors: {
  custom: {
    50: '#9dc8fd',
    500: '#66b2fb',
    950: '#000000',
  },
}

SCSS

$custom: #66b2fb;
$custom-light: #9dc8fd;
$custom-dark: #000000;

JSON

{
  "hex": "#66b2fb",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 251
  },
  "hsl": {
    "h": 209.396,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.74489,
    "c": 0.13049,
    "h": 249.1
  },
  "luminance": 0.41631
}

Semantic roles & 50–950 ramp

primary

#66B2FB

secondary

#F4DEC9

accent

#7000E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B2FB

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

Preview Lab → · Contrast checker → · Palette generator →