#66BEF4#66BEF4

#66BEF4 is a light, moderate cyan. Relative luminance 0.462; OKLCH L 76.8% C 0.115 H 237.7°. Best body text is #000000 at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#66BEF4
RGB	rgb(102, 190, 244)
HSL	hsl(203, 87%, 68%)
HSV	hsv(203, 58%, 96%)
CMYK	cmyk(58.2%, 22.1%, 0%, 4.3%)
CIE-LAB	lab(73.66, -11.11, -34.74)
CIE-LCH	lch(73.66, 36.47, 252.27°)
OKLab	oklab(76.8% -0.0613 -0.0972)
OKLCH	oklch(76.8% 0.115 237.7)
XYZ	xyz(40.2159, 46.1796, 92.3646)
Luminance	0.4618 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BEF4 #F49C66

analogous

#66F4E3 #66BEF4 #6677F4

triadic

#66BEF4 #F466BE #BEF466

tetradic

#66BEF4 #E366F4 #F49C66 #77F466

square

#66BEF4 #E366F4 #F49C66 #77F466

split-complementary

#66BEF4 #F46677 #F4E366

monochromatic

#0F87D1 #2DA6F0 #66BEF4 #9FD6F8 #D8EFFC

Accessibility & contrast

On white

2.05

#66BEF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.24

#66BEF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEF4

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BEF4	#FFFFFF	#000000	##000000
##66BEF4	1.00	2.05	10.24	10.24
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.24	21.00	1.00	1.00
##000000	10.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5BDF7

Deuteranopia (green-blind)

#92AFF3

Tritanopia (blue-blind)

#00CCD0

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66bef4;
/* rgb */ color: rgb(102, 190, 244);
/* oklch */ color: oklch(76.8% 0.115 237.7);

Tailwind

colors: {
  custom: {
    50: '#9cd1f8',
    500: '#66bef4',
    950: '#000000',
  },
}

SCSS

$custom: #66bef4;
$custom-light: #9cd1f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66bef4",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 244
  },
  "hsl": {
    "h": 202.817,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.76801,
    "c": 0.11496,
    "h": 237.7
  },
  "luminance": 0.46183
}

Semantic roles & 50–950 ramp

primary

#66BEF4

secondary

#F1D6C5

accent

#5802E3

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BEF4

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

Preview Lab → · Contrast checker → · Palette generator →