#66AED5#66AED5

#66AED5 is a light, moderate cyan. Relative luminance 0.379; OKLCH L 71.9% C 0.092 H 233.7°. Best body text is #000000 at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#66AED5
RGB	rgb(102, 174, 213)
HSL	hsl(201, 57%, 62%)
HSV	hsv(201, 52%, 84%)
CMYK	cmyk(52.1%, 18.3%, 0%, 16.5%)
CIE-LAB	lab(67.95, -11.76, -26.67)
CIE-LCH	lch(67.95, 29.15, 246.20°)
OKLab	oklab(71.87% -0.0544 -0.0742)
OKLCH	oklch(71.87% 0.092 233.7)
XYZ	xyz(32.6214, 37.8983, 68.5339)
Luminance	0.3790 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AED5 #D58D66

analogous

#66D5C5 #66AED5 #6677D5

triadic

#66AED5 #D566AE #AED566

tetradic

#66AED5 #C566D5 #D58D66 #77D566

square

#66AED5 #C566D5 #D58D66 #77D566

split-complementary

#66AED5 #D56677 #D5C566

monochromatic

#297197 #3794C7 #66AED5 #96C7E2 #C6E1EF

Accessibility & contrast

On white

2.45

#66AED5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.58

#66AED5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AED5

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AED5	#FFFFFF	#000000	##000000
##66AED5	1.00	2.45	8.58	8.58
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.58	21.00	1.00	1.00
##000000	8.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BACD7

Deuteranopia (green-blind)

#8CA0D4

Tritanopia (blue-blind)

#21B8BB

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #66aed5;
/* rgb */ color: rgb(102, 174, 213);
/* oklch */ color: oklch(71.9% 0.092 233.7);

Tailwind

colors: {
  custom: {
    50: '#99c6e2',
    500: '#66aed5',
    950: '#000000',
  },
}

SCSS

$custom: #66aed5;
$custom-light: #99c6e2;
$custom-dark: #000000;

JSON

{
  "hex": "#66aed5",
  "rgb": {
    "r": 102,
    "g": 174,
    "b": 213
  },
  "hsl": {
    "h": 201.081,
    "s": 56.923,
    "l": 61.765
  },
  "oklch": {
    "l": 0.71872,
    "c": 0.092,
    "h": 233.7
  },
  "luminance": 0.37901
}

Semantic roles & 50–950 ramp

primary

#66AED5

secondary

#E0C5B7

accent

#5A21C4

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0E1315

muted

#7E8283

Preview Lab

Preview with #66AED5

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

Preview Lab → · Contrast checker → · Palette generator →