#66C8F8#66C8F8

#66C8F8 is a light, moderate cyan. Relative luminance 0.509; OKLCH L 79.2% C 0.115 H 232.0°. Best body text is #000000 at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#66C8F8
RGB	rgb(102, 200, 248)
HSL	hsl(200, 91%, 69%)
HSV	hsv(200, 59%, 97%)
CMYK	cmyk(58.9%, 19.4%, 0%, 2.7%)
CIE-LAB	lab(76.62, -15.19, -32.31)
CIE-LCH	lch(76.62, 35.71, 244.83°)
OKLab	oklab(79.2% -0.0705 -0.0902)
OKLCH	oklch(79.2% 0.115 232)
XYZ	xyz(43.0705, 50.9065, 96.3449)
Luminance	0.5091 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8F8 #F89666

analogous

#66F8DF #66C8F8 #667FF8

triadic

#66C8F8 #F866C8 #C8F866

tetradic

#66C8F8 #DF66F8 #F89666 #7FF866

square

#66C8F8 #DF66F8 #F89666 #7FF866

split-complementary

#66C8F8 #F8667F #F8DF66

monochromatic

#0A95DA #2BB3F5 #66C8F8 #A1DDFB #DBF2FD

Accessibility & contrast

On white

1.88

#66C8F8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.18

#66C8F8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8F8

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8F8	#FFFFFF	#000000	##000000
##66C8F8	1.00	1.88	11.18	11.18
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.18	21.00	1.00	1.00
##000000	11.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0C6FA

Deuteranopia (green-blind)

#9CB6F7

Tritanopia (blue-blind)

#00D5D8

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #66c8f8;
/* rgb */ color: rgb(102, 200, 248);
/* oklch */ color: oklch(79.2% 0.115 232.0);

Tailwind

colors: {
  custom: {
    50: '#9dd8fa',
    500: '#66c8f8',
    950: '#000000',
  },
}

SCSS

$custom: #66c8f8;
$custom-light: #9dd8fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8f8",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 248
  },
  "hsl": {
    "h": 199.726,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.79203,
    "c": 0.11453,
    "h": 232
  },
  "luminance": 0.50911
}

Semantic roles & 50–950 ramp

primary

#66C8F8

secondary

#D26631

accent

#4B00E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8F8

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

Preview Lab → · Contrast checker → · Palette generator →