#66B3DB#66B3DB

#66B3DB is a light, moderate cyan. Relative luminance 0.402; OKLCH L 73.3% C 0.096 H 232.8°. Best body text is #000000 at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#66B3DB
RGB	rgb(102, 179, 219)
HSL	hsl(201, 62%, 63%)
HSV	hsv(201, 53%, 86%)
CMYK	cmyk(53.4%, 18.3%, 0%, 14.1%)
CIE-LAB	lab(69.60, -12.69, -27.43)
CIE-LCH	lch(69.60, 30.22, 245.17°)
OKLab	oklab(73.26% -0.0579 -0.0763)
OKLCH	oklch(73.26% 0.096 232.8)
XYZ	xyz(34.3810, 40.1765, 72.9471)
Luminance	0.4018 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B3DB #DB8E66

analogous

#66DBC9 #66B3DB #6678DB

triadic

#66B3DB #DB66B3 #B3DB66

tetradic

#66B3DB #C966DB #DB8E66 #78DB66

square

#66B3DB #C966DB #DB8E66 #78DB66

split-complementary

#66B3DB #DB6678 #DBC966

monochromatic

#2677A1 #349ACF #66B3DB #98CCE7 #C9E4F2

Accessibility & contrast

On white

2.32

#66B3DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.04

#66B3DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B3DB

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B3DB	#FFFFFF	#000000	##000000
##66B3DB	1.00	2.32	9.04	9.04
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.04	21.00	1.00	1.00
##000000	9.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0B1DD

Deuteranopia (green-blind)

#8FA5DA

Tritanopia (blue-blind)

#11BEC0

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66b3db;
/* rgb */ color: rgb(102, 179, 219);
/* oklch */ color: oklch(73.3% 0.096 232.8);

Tailwind

colors: {
  custom: {
    50: '#99c9e6',
    500: '#66b3db',
    950: '#000000',
  },
}

SCSS

$custom: #66b3db;
$custom-light: #99c9e6;
$custom-dark: #000000;

JSON

{
  "hex": "#66b3db",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 219
  },
  "hsl": {
    "h": 200.513,
    "s": 61.905,
    "l": 62.941
  },
  "oklch": {
    "l": 0.73256,
    "c": 0.09584,
    "h": 232.8
  },
  "luminance": 0.40179
}

Semantic roles & 50–950 ramp

primary

#66B3DB

secondary

#E3C8B9

accent

#571CCA

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #66B3DB

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

Preview Lab → · Contrast checker → · Palette generator →