#66C8F6#66C8F6

#66C8F6 is a light, moderate cyan. Relative luminance 0.508; OKLCH L 79.1% C 0.113 H 230.9°. Best body text is #000000 at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#66C8F6
RGB	rgb(102, 200, 246)
HSL	hsl(199, 89%, 68%)
HSV	hsv(199, 59%, 96%)
CMYK	cmyk(58.5%, 18.7%, 0%, 3.5%)
CIE-LAB	lab(76.55, -15.78, -31.36)
CIE-LCH	lch(76.55, 35.11, 243.28°)
OKLab	oklab(79.12% -0.0712 -0.0875)
OKLCH	oklch(79.12% 0.113 230.9)
XYZ	xyz(42.7619, 50.7831, 94.7195)
Luminance	0.5079 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8F6 #F69466

analogous

#66F6DC #66C8F6 #6680F6

triadic

#66C8F6 #F666C8 #C8F666

tetradic

#66C8F6 #DC66F6 #F69466 #80F666

square

#66C8F6 #DC66F6 #F69466 #80F666

split-complementary

#66C8F6 #F66680 #F6DC66

monochromatic

#0D95D5 #2CB3F3 #66C8F6 #A0DDF9 #DAF2FD

Accessibility & contrast

On white

1.88

#66C8F6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.16

#66C8F6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8F6

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8F6	#FFFFFF	#000000	##000000
##66C8F6	1.00	1.88	11.16	11.16
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.16	21.00	1.00	1.00
##000000	11.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1C5F8

Deuteranopia (green-blind)

#9DB6F5

Tritanopia (blue-blind)

#00D5D7

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #66c8f6;
/* rgb */ color: rgb(102, 200, 246);
/* oklch */ color: oklch(79.1% 0.113 230.9);

Tailwind

colors: {
  custom: {
    50: '#9dd8f9',
    500: '#66c8f6',
    950: '#000000',
  },
}

SCSS

$custom: #66c8f6;
$custom-light: #9dd8f9;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8f6",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 246
  },
  "hsl": {
    "h": 199.167,
    "s": 88.889,
    "l": 68.235
  },
  "oklch": {
    "l": 0.79119,
    "c": 0.11283,
    "h": 230.9
  },
  "luminance": 0.50787
}

Semantic roles & 50–950 ramp

primary

#66C8F6

secondary

#CF6431

accent

#4900E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8F6

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

Preview Lab → · Contrast checker → · Palette generator →