#66BDEF#66BDEF

#66BDEF is a light, moderate cyan. Relative luminance 0.455; OKLCH L 76.4% C 0.111 H 235.9°. Best body text is #000000 at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#66BDEF
RGB	rgb(102, 189, 239)
HSL	hsl(202, 81%, 67%)
HSV	hsv(202, 57%, 94%)
CMYK	cmyk(57.3%, 20.9%, 0%, 6.3%)
CIE-LAB	lab(73.19, -12.08, -32.77)
CIE-LCH	lch(73.19, 34.93, 249.76°)
OKLab	oklab(76.36% -0.062 -0.0916)
OKLCH	oklch(76.36% 0.111 235.9)
XYZ	xyz(39.2512, 45.4483, 88.3485)
Luminance	0.4545 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BDEF #EF9866

analogous

#66EFDD #66BDEF #6679EF

triadic

#66BDEF #EF66BD #BDEF66

tetradic

#66BDEF #DD66EF #EF9866 #79EF66

square

#66BDEF #DD66EF #EF9866 #79EF66

split-complementary

#66BDEF #EF6679 #EFDD66

monochromatic

#1585C6 #2FA5E9 #66BDEF #9DD5F5 #D5EDFB

Accessibility & contrast

On white

2.08

#66BDEF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.09

#66BDEF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BDEF

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BDEF	#FFFFFF	#000000	##000000
##66BDEF	1.00	2.08	10.09	10.09
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.09	21.00	1.00	1.00
##000000	10.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6BCF1

Deuteranopia (green-blind)

#93ADEE

Tritanopia (blue-blind)

#00CACE

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66bdef;
/* rgb */ color: rgb(102, 189, 239);
/* oklch */ color: oklch(76.4% 0.111 235.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#66bdef",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 239
  },
  "hsl": {
    "h": 201.898,
    "s": 81.065,
    "l": 66.863
  },
  "oklch": {
    "l": 0.76359,
    "c": 0.11058,
    "h": 235.9
  },
  "luminance": 0.45452
}

Semantic roles & 50–950 ramp

primary

#66BDEF

secondary

#EED2C2

accent

#5608DD

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BDEF

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

Preview Lab → · Contrast checker → · Palette generator →