#66ADDE#66ADDE

#66ADDE is a light, moderate cyan. Relative luminance 0.380; OKLCH L 72.0% C 0.101 H 240.3°. Best body text is #000000 at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#66ADDE
RGB	rgb(102, 173, 222)
HSL	hsl(205, 65%, 64%)
HSV	hsv(205, 54%, 87%)
CMYK	cmyk(54.1%, 22.1%, 0%, 12.9%)
CIE-LAB	lab(68.01, -8.55, -31.52)
CIE-LCH	lch(68.01, 32.66, 254.81°)
OKLab	oklab(72.04% -0.0502 -0.088)
OKLCH	oklch(72.04% 0.101 240.3)
XYZ	xyz(33.6031, 37.9830, 74.6537)
Luminance	0.3799 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ADDE #DE9766

analogous

#66DED3 #66ADDE #6671DE

triadic

#66ADDE #DE66AD #ADDE66

tetradic

#66ADDE #D366DE #DE9766 #71DE66

square

#66ADDE #D366DE #DE9766 #71DE66

split-complementary

#66ADDE #DE6671 #DED366

monochromatic

#2471A6 #3492D3 #66ADDE #98C8E9 #CBE3F4

Accessibility & contrast

On white

2.44

#66ADDE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.60

#66ADDE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ADDE

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ADDE	#FFFFFF	#000000	##000000
##66ADDE	1.00	2.44	8.60	8.60
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.60	21.00	1.00	1.00
##000000	8.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97ADE0

Deuteranopia (green-blind)

#87A0DD

Tritanopia (blue-blind)

#0DB9BD

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #66adde;
/* rgb */ color: rgb(102, 173, 222);
/* oklch */ color: oklch(72.0% 0.101 240.3);

Tailwind

colors: {
  custom: {
    50: '#99c5e8',
    500: '#66adde',
    950: '#000000',
  },
}

SCSS

$custom: #66adde;
$custom-light: #99c5e8;
$custom-dark: #000000;

JSON

{
  "hex": "#66adde",
  "rgb": {
    "r": 102,
    "g": 173,
    "b": 222
  },
  "hsl": {
    "h": 204.5,
    "s": 64.516,
    "l": 63.529
  },
  "oklch": {
    "l": 0.72036,
    "c": 0.10134,
    "h": 240.3
  },
  "luminance": 0.37986
}

Semantic roles & 50–950 ramp

primary

#66ADDE

secondary

#E5CCBB

accent

#6219CC

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0F1216

muted

#7E8184

Preview Lab

Preview with #66ADDE

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

Preview Lab → · Contrast checker → · Palette generator →