#66ACF3#66ACF3

#66ACF3 is a light, vivid cyan. Relative luminance 0.388; OKLCH L 72.8% C 0.126 H 250.2°. Best body text is #000000 at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#66ACF3
RGB	rgb(102, 172, 243)
HSL	hsl(210, 85%, 68%)
HSV	hsv(210, 58%, 95%)
CMYK	cmyk(58%, 29.2%, 0%, 4.7%)
CIE-LAB	lab(68.60, -1.56, -42.07)
CIE-LCH	lch(68.60, 42.10, 267.87°)
OKLab	oklab(72.8% -0.0426 -0.1185)
OKLCH	oklch(72.8% 0.126 250.2)
XYZ	xyz(36.4038, 38.7976, 90.3469)
Luminance	0.3880 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ACF3 #F3AD66

analogous

#66F2F3 #66ACF3 #6666F3

triadic

#66ACF3 #F366AC #ACF366

tetradic

#66ACF3 #F366F2 #F3AD66 #66F366

square

#66ACF3 #F366F2 #F3AD66 #66F366

split-complementary

#66ACF3 #F36666 #F2F366

monochromatic

#106FCE #2D8DEF #66ACF3 #9FCBF7 #D7EAFC

Accessibility & contrast

On white

2.40

#66ACF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.76

#66ACF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ACF3

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ACF3	#FFFFFF	#000000	##000000
##66ACF3	1.00	2.40	8.76	8.76
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.76	21.00	1.00	1.00
##000000	8.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EAFF6

Deuteranopia (green-blind)

#7BA1F2

Tritanopia (blue-blind)

#00BCC5

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66acf3;
/* rgb */ color: rgb(102, 172, 243);
/* oklch */ color: oklch(72.8% 0.126 250.2);

Tailwind

colors: {
  custom: {
    50: '#9cc4f7',
    500: '#66acf3',
    950: '#000000',
  },
}

SCSS

$custom: #66acf3;
$custom-light: #9cc4f7;
$custom-dark: #000000;

JSON

{
  "hex": "#66acf3",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 243
  },
  "hsl": {
    "h": 210.213,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.72795,
    "c": 0.12588,
    "h": 250.2
  },
  "luminance": 0.38801
}

Semantic roles & 50–950 ramp

primary

#66ACF3

secondary

#F0DBC5

accent

#7404E2

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66ACF3

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

Preview Lab → · Contrast checker → · Palette generator →