#66BCEF#66BCEF

#66BCEF is a light, moderate cyan. Relative luminance 0.450; OKLCH L 76.1% C 0.111 H 236.7°. Best body text is #000000 at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#66BCEF
RGB	rgb(102, 188, 239)
HSL	hsl(202, 81%, 67%)
HSV	hsv(202, 57%, 94%)
CMYK	cmyk(57.3%, 21.3%, 0%, 6.3%)
CIE-LAB	lab(72.90, -11.55, -33.21)
CIE-LCH	lch(72.90, 35.16, 250.82°)
OKLab	oklab(76.14% -0.0609 -0.0928)
OKLCH	oklch(76.14% 0.111 236.7)
XYZ	xyz(39.0368, 45.0196, 88.2771)
Luminance	0.4502 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BCEF #EF9966

analogous

#66EFDE #66BCEF #6678EF

triadic

#66BCEF #EF66BC #BCEF66

tetradic

#66BCEF #DE66EF #EF9966 #78EF66

square

#66BCEF #DE66EF #EF9966 #78EF66

split-complementary

#66BCEF #EF6678 #EFDE66

monochromatic

#1584C6 #2FA4E9 #66BCEF #9DD4F5 #D5EDFB

Accessibility & contrast

On white

2.10

#66BCEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.00

#66BCEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BCEF

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BCEF	#FFFFFF	#000000	##000000
##66BCEF	1.00	2.10	10.00	10.00
#FFFFFF	2.10	1.00	21.00	21.00
#000000	10.00	21.00	1.00	1.00
##000000	10.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4BBF1

Deuteranopia (green-blind)

#91ADEE

Tritanopia (blue-blind)

#00C9CD

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bcef;
/* rgb */ color: rgb(102, 188, 239);
/* oklch */ color: oklch(76.1% 0.111 236.7);

Tailwind

colors: {
  custom: {
    50: '#9cd0f4',
    500: '#66bcef',
    950: '#000000',
  },
}

SCSS

$custom: #66bcef;
$custom-light: #9cd0f4;
$custom-dark: #000000;

JSON

{
  "hex": "#66bcef",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 239
  },
  "hsl": {
    "h": 202.336,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.76136,
    "c": 0.11103,
    "h": 236.7
  },
  "luminance": 0.45023
}

Semantic roles & 50–950 ramp

primary

#66BCEF

secondary

#EED3C2

accent

#5708DD

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BCEF

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

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