#66BCE7#66BCE7

#66BCE7 is a light, moderate cyan. Relative luminance 0.446; OKLCH L 75.8% C 0.104 H 232.1°. Best body text is #000000 at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#66BCE7
RGB	rgb(102, 188, 231)
HSL	hsl(200, 73%, 65%)
HSV	hsv(200, 56%, 91%)
CMYK	cmyk(55.8%, 18.6%, 0%, 9.4%)
CIE-LAB	lab(72.60, -13.94, -29.34)
CIE-LCH	lch(72.60, 32.49, 244.60°)
OKLab	oklab(75.79% -0.0636 -0.0818)
OKLCH	oklch(75.79% 0.104 232.1)
XYZ	xyz(37.8811, 44.5573, 82.1900)
Luminance	0.4456 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BCE7 #E79166

analogous

#66E7D1 #66BCE7 #667BE7

triadic

#66BCE7 #E766BC #BCE766

tetradic

#66BCE7 #D166E7 #E79166 #7BE766

square

#66BCE7 #D166E7 #E79166 #7BE766

split-complementary

#66BCE7 #E7667B #E7D166

monochromatic

#1D83B6 #31A5DF #66BCE7 #9BD3EF #D0EAF8

Accessibility & contrast

On white

2.12

#66BCE7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.91

#66BCE7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BCE7

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BCE7	#FFFFFF	#000000	##000000
##66BCE7	1.00	2.12	9.91	9.91
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.91	21.00	1.00	1.00
##000000	9.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7BAE9

Deuteranopia (green-blind)

#95ACE6

Tritanopia (blue-blind)

#00C8CA

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #66bce7;
/* rgb */ color: rgb(102, 188, 231);
/* oklch */ color: oklch(75.8% 0.104 232.1);

Tailwind

colors: {
  custom: {
    50: '#9bd0ee',
    500: '#66bce7',
    950: '#000000',
  },
}

SCSS

$custom: #66bce7;
$custom-light: #9bd0ee;
$custom-dark: #000000;

JSON

{
  "hex": "#66bce7",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 231
  },
  "hsl": {
    "h": 200,
    "s": 72.881,
    "l": 65.294
  },
  "oklch": {
    "l": 0.75792,
    "c": 0.10364,
    "h": 232.1
  },
  "luminance": 0.44561
}

Semantic roles & 50–950 ramp

primary

#66BCE7

secondary

#EACDBF

accent

#5211D5

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #66BCE7

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

Preview Lab → · Contrast checker → · Palette generator →