#66B6F3#66B6F3

#66B6F3 is a light, moderate cyan. Relative luminance 0.428; OKLCH L 75.0% C 0.118 H 243.3°. Best body text is #000000 at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#66B6F3
RGB	rgb(102, 182, 243)
HSL	hsl(206, 85%, 68%)
HSV	hsv(206, 58%, 95%)
CMYK	cmyk(58%, 25.1%, 0%, 4.7%)
CIE-LAB	lab(71.38, -7.09, -37.73)
CIE-LCH	lch(71.38, 38.39, 259.36°)
OKLab	oklab(74.98% -0.0532 -0.1059)
OKLCH	oklch(74.98% 0.118 243.3)
XYZ	xyz(38.3791, 42.7482, 91.0053)
Luminance	0.4275 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B6F3 #F3A366

analogous

#66F3E9 #66B6F3 #6670F3

triadic

#66B6F3 #F366B6 #B6F366

tetradic

#66B6F3 #E966F3 #F3A366 #70F366

square

#66B6F3 #E966F3 #F3A366 #70F366

split-complementary

#66B6F3 #F36670 #F3E966

monochromatic

#107CCE #2D9BEF #66B6F3 #9FD1F7 #D7ECFC

Accessibility & contrast

On white

2.20

#66B6F3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.55

#66B6F3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B6F3

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B6F3	#FFFFFF	#000000	##000000
##66B6F3	1.00	2.20	9.55	9.55
#FFFFFF	2.20	1.00	21.00	21.00
#000000	9.55	21.00	1.00	1.00
##000000	9.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB7F6

Deuteranopia (green-blind)

#88A9F2

Tritanopia (blue-blind)

#00C5CB

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #66b6f3;
/* rgb */ color: rgb(102, 182, 243);
/* oklch */ color: oklch(75.0% 0.118 243.3);

Tailwind

colors: {
  custom: {
    50: '#9ccbf7',
    500: '#66b6f3',
    950: '#000000',
  },
}

SCSS

$custom: #66b6f3;
$custom-light: #9ccbf7;
$custom-dark: #000000;

JSON

{
  "hex": "#66b6f3",
  "rgb": {
    "r": 102,
    "g": 182,
    "b": 243
  },
  "hsl": {
    "h": 205.957,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.74984,
    "c": 0.11848,
    "h": 243.3
  },
  "luminance": 0.42752
}

Semantic roles & 50–950 ramp

primary

#66B6F3

secondary

#F0D7C5

accent

#6404E2

background

#FAFCFF

surface

#F4F8FE

border

#CED1D6

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B6F3

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

Preview Lab → · Contrast checker → · Palette generator →