#66BEEF#66BEEF

#66BEEF is a light, moderate cyan. Relative luminance 0.459; OKLCH L 76.6% C 0.110 H 235.1°. Best body text is #000000 at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#66BEEF
RGB	rgb(102, 190, 239)
HSL	hsl(201, 81%, 67%)
HSV	hsv(201, 57%, 94%)
CMYK	cmyk(57.3%, 20.5%, 0%, 6.3%)
CIE-LAB	lab(73.47, -12.61, -32.34)
CIE-LCH	lch(73.47, 34.71, 248.69°)
OKLab	oklab(76.58% -0.063 -0.0903)
OKLCH	oklch(76.58% 0.11 235.1)
XYZ	xyz(39.4671, 45.8800, 88.4205)
Luminance	0.4588 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BEEF #EF9766

analogous

#66EFDC #66BEEF #667AEF

triadic

#66BEEF #EF66BE #BEEF66

tetradic

#66BEEF #DC66EF #EF9766 #7AEF66

square

#66BEEF #DC66EF #EF9766 #7AEF66

split-complementary

#66BEEF #EF667A #EFDC66

monochromatic

#1587C6 #2FA6E9 #66BEEF #9DD6F5 #D5EDFB

Accessibility & contrast

On white

2.06

#66BEEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.18

#66BEEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEEF

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BEEF	#FFFFFF	#000000	##000000
##66BEEF	1.00	2.06	10.18	10.18
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.18	21.00	1.00	1.00
##000000	10.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7BCF1

Deuteranopia (green-blind)

#94AEEE

Tritanopia (blue-blind)

#00CBCE

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66beef;
/* rgb */ color: rgb(102, 190, 239);
/* oklch */ color: oklch(76.6% 0.110 235.1);

Tailwind

colors: {
  custom: {
    50: '#9cd1f4',
    500: '#66beef',
    950: '#000000',
  },
}

SCSS

$custom: #66beef;
$custom-light: #9cd1f4;
$custom-dark: #000000;

JSON

{
  "hex": "#66beef",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 239
  },
  "hsl": {
    "h": 201.46,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.76582,
    "c": 0.11015,
    "h": 235.1
  },
  "luminance": 0.45884
}

Semantic roles & 50–950 ramp

primary

#66BEEF

secondary

#EED2C2

accent

#5408DD

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BEEF

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

Preview Lab → · Contrast checker → · Palette generator →