#66A4EE#66A4EE

#66A4EE is a light, vivid cyan. Relative luminance 0.355; OKLCH L 70.8% C 0.127 H 253.8°. Best body text is #000000 at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#66A4EE
RGB	rgb(102, 164, 238)
HSL	hsl(213, 80%, 67%)
HSV	hsv(213, 57%, 93%)
CMYK	cmyk(57.1%, 31.1%, 0%, 6.7%)
CIE-LAB	lab(66.17, 1.38, -43.15)
CIE-LCH	lch(66.17, 43.17, 271.83°)
OKLab	oklab(70.81% -0.0354 -0.1217)
OKLCH	oklch(70.81% 0.127 253.8)
XYZ	xyz(34.1821, 35.5458, 85.9320)
Luminance	0.3555 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A4EE #EEB066

analogous

#66E8EE #66A4EE #6C66EE

triadic

#66A4EE #EE66A4 #A4EE66

tetradic

#66A4EE #EE66E8 #EEB066 #66EE6C

square

#66A4EE #EE66E8 #EEB066 #66EE6C

split-complementary

#66A4EE #EE6C66 #E8EE66

monochromatic

#1665C4 #2F83E8 #66A4EE #9DC5F4 #D4E6FA

Accessibility & contrast

On white

2.59

#66A4EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.11

#66A4EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4EE

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A4EE	#FFFFFF	#000000	##000000
##66A4EE	1.00	2.59	8.11	8.11
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.11	21.00	1.00	1.00
##000000	8.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#85A8F1

Deuteranopia (green-blind)

#749BEC

Tritanopia (blue-blind)

#00B5BE

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #66a4ee;
/* rgb */ color: rgb(102, 164, 238);
/* oklch */ color: oklch(70.8% 0.127 253.8);

Tailwind

colors: {
  custom: {
    50: '#9bbef4',
    500: '#66a4ee',
    950: '#000000',
  },
}

SCSS

$custom: #66a4ee;
$custom-light: #9bbef4;
$custom-dark: #000000;

JSON

{
  "hex": "#66a4ee",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 238
  },
  "hsl": {
    "h": 212.647,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.70813,
    "c": 0.12672,
    "h": 253.8
  },
  "luminance": 0.35549
}

Semantic roles & 50–950 ramp

primary

#66A4EE

secondary

#EEDAC2

accent

#7C09DC

background

#FAFBFE

surface

#F3F6FD

border

#CDD0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A4EE

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

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