#66BCEE#66BCEE

#66BCEE is a light, moderate cyan. Relative luminance 0.450; OKLCH L 76.1% C 0.110 H 236.2°. Best body text is #000000 at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#66BCEE
RGB	rgb(102, 188, 238)
HSL	hsl(202, 80%, 67%)
HSV	hsv(202, 57%, 93%)
CMYK	cmyk(57.1%, 21%, 0%, 6.7%)
CIE-LAB	lab(72.87, -11.85, -32.73)
CIE-LCH	lch(72.87, 34.81, 250.10°)
OKLab	oklab(76.09% -0.0612 -0.0915)
OKLCH	oklch(76.09% 0.11 236.2)
XYZ	xyz(38.8895, 44.9607, 87.5012)
Luminance	0.4496 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BCEE #EE9866

analogous

#66EEDC #66BCEE #6678EE

triadic

#66BCEE #EE66BC #BCEE66

tetradic

#66BCEE #DC66EE #EE9866 #78EE66

square

#66BCEE #DC66EE #EE9866 #78EE66

split-complementary

#66BCEE #EE6678 #EEDC66

monochromatic

#1684C4 #2FA4E8 #66BCEE #9DD4F4 #D4ECFA

Accessibility & contrast

On white

2.10

#66BCEE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.99

#66BCEE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BCEE

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BCEE	#FFFFFF	#000000	##000000
##66BCEE	1.00	2.10	9.99	9.99
#FFFFFF	2.10	1.00	21.00	21.00
#000000	9.99	21.00	1.00	1.00
##000000	9.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5BBF0

Deuteranopia (green-blind)

#92ADED

Tritanopia (blue-blind)

#00C9CD

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bcee;
/* rgb */ color: rgb(102, 188, 238);
/* oklch */ color: oklch(76.1% 0.110 236.2);

Tailwind

colors: {
  custom: {
    50: '#9cd0f3',
    500: '#66bcee',
    950: '#000000',
  },
}

SCSS

$custom: #66bcee;
$custom-light: #9cd0f3;
$custom-dark: #000000;

JSON

{
  "hex": "#66bcee",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 238
  },
  "hsl": {
    "h": 202.059,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.76092,
    "c": 0.11006,
    "h": 236.2
  },
  "luminance": 0.44964
}

Semantic roles & 50–950 ramp

primary

#66BCEE

secondary

#EED2C2

accent

#5709DC

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BCEE

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

Preview Lab → · Contrast checker → · Palette generator →