#66B2DD#66B2DD

#66B2DD is a light, moderate cyan. Relative luminance 0.399; OKLCH L 73.1% C 0.098 H 235.1°. Best body text is #000000 at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#66B2DD
RGB	rgb(102, 178, 221)
HSL	hsl(202, 64%, 63%)
HSV	hsv(202, 54%, 87%)
CMYK	cmyk(53.8%, 19.5%, 0%, 13.3%)
CIE-LAB	lab(69.39, -11.56, -28.84)
CIE-LCH	lch(69.39, 31.07, 248.16°)
OKLab	oklab(73.11% -0.0561 -0.0804)
OKLCH	oklch(73.11% 0.098 235.1)
XYZ	xyz(34.4462, 39.8831, 74.2756)
Luminance	0.3989 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B2DD #DD9166

analogous

#66DDCC #66B2DD #6676DD

triadic

#66B2DD #DD66B2 #B2DD66

tetradic

#66B2DD #CC66DD #DD9166 #76DD66

square

#66B2DD #CC66DD #DD9166 #76DD66

split-complementary

#66B2DD #DD6676 #DDCC66

monochromatic

#2476A4 #3499D2 #66B2DD #98CBE8 #CAE4F3

Accessibility & contrast

On white

2.34

#66B2DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.98

#66B2DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B2DD

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B2DD	#FFFFFF	#000000	##000000
##66B2DD	1.00	2.34	8.98	8.98
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.98	21.00	1.00	1.00
##000000	8.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB1DF

Deuteranopia (green-blind)

#8DA4DC

Tritanopia (blue-blind)

#0BBDC0

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66b2dd;
/* rgb */ color: rgb(102, 178, 221);
/* oklch */ color: oklch(73.1% 0.098 235.1);

Tailwind

colors: {
  custom: {
    50: '#9ac9e7',
    500: '#66b2dd',
    950: '#000000',
  },
}

SCSS

$custom: #66b2dd;
$custom-light: #9ac9e7;
$custom-dark: #000000;

JSON

{
  "hex": "#66b2dd",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 221
  },
  "hsl": {
    "h": 201.681,
    "s": 63.636,
    "l": 63.333
  },
  "oklch": {
    "l": 0.73115,
    "c": 0.09803,
    "h": 235.1
  },
  "luminance": 0.39886
}

Semantic roles & 50–950 ramp

primary

#66B2DD

secondary

#E5CABA

accent

#5A1ACB

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #66B2DD

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

Preview Lab → · Contrast checker → · Palette generator →