#66B6F5#66B6F5

#66B6F5 is a light, vivid cyan. Relative luminance 0.429; OKLCH L 75.1% C 0.121 H 244.2°. Best body text is #000000 at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#66B6F5
RGB	rgb(102, 182, 245)
HSL	hsl(206, 88%, 68%)
HSV	hsv(206, 58%, 96%)
CMYK	cmyk(58.4%, 25.7%, 0%, 3.9%)
CIE-LAB	lab(71.47, -6.47, -38.69)
CIE-LCH	lch(71.47, 39.22, 260.50°)
OKLab	oklab(75.08% -0.0526 -0.1086)
OKLCH	oklch(75.08% 0.121 244.2)
XYZ	xyz(38.6828, 42.8697, 92.6046)
Luminance	0.4287 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B6F5 #F5A566

analogous

#66F5ED #66B6F5 #666EF5

triadic

#66B6F5 #F566B6 #B6F566

tetradic

#66B6F5 #ED66F5 #F5A566 #6EF566

square

#66B6F5 #ED66F5 #F5A566 #6EF566

split-complementary

#66B6F5 #F5666E #F5ED66

monochromatic

#0E7CD3 #2D9BF1 #66B6F5 #9FD1F9 #D9EDFD

Accessibility & contrast

On white

2.19

#66B6F5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.57

#66B6F5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B6F5

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B6F5	#FFFFFF	#000000	##000000
##66B6F5	1.00	2.19	9.57	9.57
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.57	21.00	1.00	1.00
##000000	9.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB7F8

Deuteranopia (green-blind)

#87A9F4

Tritanopia (blue-blind)

#00C5CC

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #66b6f5;
/* rgb */ color: rgb(102, 182, 245);
/* oklch */ color: oklch(75.1% 0.121 244.2);

Tailwind

colors: {
  custom: {
    50: '#9ccbf8',
    500: '#66b6f5',
    950: '#000000',
  },
}

SCSS

$custom: #66b6f5;
$custom-light: #9ccbf8;
$custom-dark: #000000;

JSON

{
  "hex": "#66b6f5",
  "rgb": {
    "r": 102,
    "g": 182,
    "b": 245
  },
  "hsl": {
    "h": 206.434,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.75077,
    "c": 0.12068,
    "h": 244.2
  },
  "luminance": 0.42873
}

Semantic roles & 50–950 ramp

primary

#66B6F5

secondary

#F1D9C6

accent

#6501E4

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B6F5

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

Preview Lab → · Contrast checker → · Palette generator →