#66BEF5#66BEF5

#66BEF5 is a light, moderate cyan. Relative luminance 0.462; OKLCH L 76.8% C 0.116 H 238.2°. Best body text is #000000 at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#66BEF5
RGB	rgb(102, 190, 245)
HSL	hsl(203, 88%, 68%)
HSV	hsv(203, 58%, 96%)
CMYK	cmyk(58.4%, 22.4%, 0%, 3.9%)
CIE-LAB	lab(73.70, -10.80, -35.22)
CIE-LCH	lch(73.70, 36.84, 252.95°)
OKLab	oklab(76.85% -0.061 -0.0986)
OKLCH	oklch(76.85% 0.116 238.2)
XYZ	xyz(40.3682, 46.2405, 93.1664)
Luminance	0.4624 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BEF5 #F59D66

analogous

#66F5E4 #66BEF5 #6676F5

triadic

#66BEF5 #F566BE #BEF566

tetradic

#66BEF5 #E466F5 #F59D66 #76F566

square

#66BEF5 #E466F5 #F59D66 #76F566

split-complementary

#66BEF5 #F56676 #F5E466

monochromatic

#0E87D3 #2DA6F1 #66BEF5 #9FD6F9 #D9EFFD

Accessibility & contrast

On white

2.05

#66BEF5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.25

#66BEF5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEF5

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BEF5	#FFFFFF	#000000	##000000
##66BEF5	1.00	2.05	10.25	10.25
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.25	21.00	1.00	1.00
##000000	10.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5BDF8

Deuteranopia (green-blind)

#91AFF4

Tritanopia (blue-blind)

#00CCD0

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66bef5;
/* rgb */ color: rgb(102, 190, 245);
/* oklch */ color: oklch(76.8% 0.116 238.2);

Tailwind

colors: {
  custom: {
    50: '#9cd1f8',
    500: '#66bef5',
    950: '#000000',
  },
}

SCSS

$custom: #66bef5;
$custom-light: #9cd1f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66bef5",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 245
  },
  "hsl": {
    "h": 203.077,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.76845,
    "c": 0.11595,
    "h": 238.2
  },
  "luminance": 0.46244
}

Semantic roles & 50–950 ramp

primary

#66BEF5

secondary

#F1D6C6

accent

#5901E4

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BEF5

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

Preview Lab → · Contrast checker → · Palette generator →