#66A1EF#66A1EF

#66A1EF is a light, vivid cyan. Relative luminance 0.345; OKLCH L 70.2% C 0.131 H 255.9°. Best body text is #000000 at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#66A1EF
RGB	rgb(102, 161, 239)
HSL	hsl(214, 81%, 67%)
HSV	hsv(214, 57%, 94%)
CMYK	cmyk(57.3%, 32.6%, 0%, 6.3%)
CIE-LAB	lab(65.39, 3.41, -44.92)
CIE-LCH	lch(65.39, 45.05, 274.34°)
OKLab	oklab(70.22% -0.0319 -0.1268)
OKLCH	oklch(70.22% 0.131 255.9)
XYZ	xyz(33.7988, 34.5436, 86.5311)
Luminance	0.3455 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A1EF #EFB466

analogous

#66E5EF #66A1EF #7066EF

triadic

#66A1EF #EF66A1 #A1EF66

tetradic

#66A1EF #EF66E5 #EFB466 #66EF70

square

#66A1EF #EF66E5 #EFB466 #66EF70

split-complementary

#66A1EF #EF7066 #E5EF66

monochromatic

#1561C6 #2F7FE9 #66A1EF #9DC3F5 #D5E5FB

Accessibility & contrast

On white

2.66

#66A1EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.91

#66A1EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A1EF

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A1EF	#FFFFFF	#000000	##000000
##66A1EF	1.00	2.66	7.91	7.91
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.91	21.00	1.00	1.00
##000000	7.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#81A6F2

Deuteranopia (green-blind)

#6F99ED

Tritanopia (blue-blind)

#00B3BD

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #66a1ef;
/* rgb */ color: rgb(102, 161, 239);
/* oklch */ color: oklch(70.2% 0.131 255.9);

Tailwind

colors: {
  custom: {
    50: '#9bbcf4',
    500: '#66a1ef',
    950: '#000000',
  },
}

SCSS

$custom: #66a1ef;
$custom-light: #9bbcf4;
$custom-dark: #000000;

JSON

{
  "hex": "#66a1ef",
  "rgb": {
    "r": 102,
    "g": 161,
    "b": 239
  },
  "hsl": {
    "h": 214.161,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.70218,
    "c": 0.1308,
    "h": 255.9
  },
  "luminance": 0.34547
}

Semantic roles & 50–950 ramp

primary

#66A1EF

secondary

#EEDBC2

accent

#8208DD

background

#FAFBFE

surface

#F4F6FD

border

#CED0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A1EF

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

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