#66C8F5#66C8F5

#66C8F5 is a light, moderate cyan. Relative luminance 0.507; OKLCH L 79.1% C 0.112 H 230.3°. Best body text is #000000 at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#66C8F5
RGB	rgb(102, 200, 245)
HSL	hsl(199, 88%, 68%)
HSV	hsv(199, 58%, 96%)
CMYK	cmyk(58.4%, 18.4%, 0%, 3.9%)
CIE-LAB	lab(76.51, -16.08, -30.88)
CIE-LCH	lch(76.51, 34.82, 242.49°)
OKLab	oklab(79.08% -0.0716 -0.0861)
OKLCH	oklch(79.08% 0.112 230.3)
XYZ	xyz(42.6089, 50.7218, 93.9133)
Luminance	0.5073 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8F5 #F59366

analogous

#66F5DA #66C8F5 #6680F5

triadic

#66C8F5 #F566C8 #C8F566

tetradic

#66C8F5 #DA66F5 #F59366 #80F566

square

#66C8F5 #DA66F5 #F59366 #80F566

split-complementary

#66C8F5 #F56680 #F5DA66

monochromatic

#0E95D3 #2DB3F1 #66C8F5 #9FDDF9 #D9F1FD

Accessibility & contrast

On white

1.88

#66C8F5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.15

#66C8F5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8F5

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8F5	#FFFFFF	#000000	##000000
##66C8F5	1.00	1.88	11.15	11.15
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.15	21.00	1.00	1.00
##000000	11.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1C5F7

Deuteranopia (green-blind)

#9DB6F4

Tritanopia (blue-blind)

#00D5D7

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #66c8f5;
/* rgb */ color: rgb(102, 200, 245);
/* oklch */ color: oklch(79.1% 0.112 230.3);

Tailwind

colors: {
  custom: {
    50: '#9dd8f8',
    500: '#66c8f5',
    950: '#000000',
  },
}

SCSS

$custom: #66c8f5;
$custom-light: #9dd8f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8f5",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 245
  },
  "hsl": {
    "h": 198.881,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.79077,
    "c": 0.112,
    "h": 230.3
  },
  "luminance": 0.50726
}

Semantic roles & 50–950 ramp

primary

#66C8F5

secondary

#CE6331

accent

#4901E4

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8F5

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

Preview Lab → · Contrast checker → · Palette generator →