#66BBEE#66BBEE

#66BBEE is a light, moderate cyan. Relative luminance 0.445; OKLCH L 75.9% C 0.111 H 237.0°. Best body text is #000000 at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#66BBEE
RGB	rgb(102, 187, 238)
HSL	hsl(203, 80%, 67%)
HSV	hsv(203, 57%, 93%)
CMYK	cmyk(57.1%, 21.4%, 0%, 6.7%)
CIE-LAB	lab(72.58, -11.31, -33.16)
CIE-LCH	lch(72.58, 35.04, 251.16°)
OKLab	oklab(75.87% -0.0602 -0.0927)
OKLCH	oklch(75.87% 0.111 237)
XYZ	xyz(38.6766, 44.5349, 87.4302)
Luminance	0.4454 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBEE #EE9966

analogous

#66EEDD #66BBEE #6677EE

triadic

#66BBEE #EE66BB #BBEE66

tetradic

#66BBEE #DD66EE #EE9966 #77EE66

square

#66BBEE #DD66EE #EE9966 #77EE66

split-complementary

#66BBEE #EE6677 #EEDD66

monochromatic

#1683C4 #2FA3E8 #66BBEE #9DD3F4 #D4ECFA

Accessibility & contrast

On white

2.12

#66BBEE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.91

#66BBEE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBEE

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBEE	#FFFFFF	#000000	##000000
##66BBEE	1.00	2.12	9.91	9.91
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.91	21.00	1.00	1.00
##000000	9.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3BAF0

Deuteranopia (green-blind)

#91ACED

Tritanopia (blue-blind)

#00C8CC

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #66bbee;
/* rgb */ color: rgb(102, 187, 238);
/* oklch */ color: oklch(75.9% 0.111 237.0);

Tailwind

colors: {
  custom: {
    50: '#9ccff3',
    500: '#66bbee',
    950: '#000000',
  },
}

SCSS

$custom: #66bbee;
$custom-light: #9ccff3;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbee",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 238
  },
  "hsl": {
    "h": 202.5,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.75869,
    "c": 0.11052,
    "h": 237
  },
  "luminance": 0.44538
}

Semantic roles & 50–950 ramp

primary

#66BBEE

secondary

#EED2C2

accent

#5809DC

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66BBEE

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

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