#66B6EB#66B6EB

#66B6EB is a light, moderate cyan. Relative luminance 0.423; OKLCH L 74.6% C 0.110 H 239.5°. Best body text is #000000 at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#66B6EB
RGB	rgb(102, 182, 235)
HSL	hsl(204, 77%, 66%)
HSV	hsv(204, 57%, 92%)
CMYK	cmyk(56.6%, 22.6%, 0%, 7.8%)
CIE-LAB	lab(71.06, -9.53, -33.89)
CIE-LCH	lch(71.06, 35.21, 254.29°)
OKLab	oklab(74.62% -0.0558 -0.0948)
OKLCH	oklch(74.62% 0.11 239.5)
XYZ	xyz(37.1973, 42.2755, 84.7809)
Luminance	0.4228 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B6EB #EB9B66

analogous

#66EBDE #66B6EB #6673EB

triadic

#66B6EB #EB66B6 #B6EB66

tetradic

#66B6EB #DE66EB #EB9B66 #73EB66

square

#66B6EB #DE66EB #EB9B66 #73EB66

split-complementary

#66B6EB #EB6673 #EBDE66

monochromatic

#197CBE #309CE4 #66B6EB #9CD0F2 #D2EAF9

Accessibility & contrast

On white

2.22

#66B6EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.46

#66B6EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B6EB

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B6EB	#FFFFFF	#000000	##000000
##66B6EB	1.00	2.22	9.46	9.46
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.46	21.00	1.00	1.00
##000000	9.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB6EE

Deuteranopia (green-blind)

#8CA8EA

Tritanopia (blue-blind)

#00C3C8

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #66b6eb;
/* rgb */ color: rgb(102, 182, 235);
/* oklch */ color: oklch(74.6% 0.110 239.5);

Tailwind

colors: {
  custom: {
    50: '#9bcbf1',
    500: '#66b6eb',
    950: '#000000',
  },
}

SCSS

$custom: #66b6eb;
$custom-light: #9bcbf1;
$custom-dark: #000000;

JSON

{
  "hex": "#66b6eb",
  "rgb": {
    "r": 102,
    "g": 182,
    "b": 235
  },
  "hsl": {
    "h": 203.91,
    "s": 76.879,
    "l": 66.078
  },
  "oklch": {
    "l": 0.74622,
    "c": 0.11001,
    "h": 239.5
  },
  "luminance": 0.42279
}

Semantic roles & 50–950 ramp

primary

#66B6EB

secondary

#ECD2C1

accent

#5E0CD9

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #66B6EB

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

Preview Lab → · Contrast checker → · Palette generator →