#66B7F4#66B7F4

#66B7F4 is a light, moderate cyan. Relative luminance 0.432; OKLCH L 75.3% C 0.119 H 243.0°. Best body text is #000000 at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#66B7F4
RGB	rgb(102, 183, 244)
HSL	hsl(206, 87%, 68%)
HSV	hsv(206, 58%, 96%)
CMYK	cmyk(58.2%, 25%, 0%, 4.3%)
CIE-LAB	lab(71.70, -7.33, -37.78)
CIE-LCH	lch(71.70, 38.48, 259.02°)
OKLab	oklab(75.25% -0.0539 -0.106)
OKLCH	oklch(75.25% 0.119 243)
XYZ	xyz(38.7361, 43.2199, 91.8713)
Luminance	0.4322 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B7F4 #F4A366

analogous

#66F4EA #66B7F4 #6670F4

triadic

#66B7F4 #F466B7 #B7F466

tetradic

#66B7F4 #EA66F4 #F4A366 #70F466

square

#66B7F4 #EA66F4 #F4A366 #70F466

split-complementary

#66B7F4 #F46670 #F4EA66

monochromatic

#0F7DD1 #2D9CF0 #66B7F4 #9FD2F8 #D8EDFC

Accessibility & contrast

On white

2.18

#66B7F4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.64

#66B7F4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B7F4

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B7F4	#FFFFFF	#000000	##000000
##66B7F4	1.00	2.18	9.64	9.64
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.64	21.00	1.00	1.00
##000000	9.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CB8F7

Deuteranopia (green-blind)

#89A9F3

Tritanopia (blue-blind)

#00C6CC

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #66b7f4;
/* rgb */ color: rgb(102, 183, 244);
/* oklch */ color: oklch(75.3% 0.119 243.0);

Tailwind

colors: {
  custom: {
    50: '#9cccf8',
    500: '#66b7f4',
    950: '#000000',
  },
}

SCSS

$custom: #66b7f4;
$custom-light: #9cccf8;
$custom-dark: #000000;

JSON

{
  "hex": "#66b7f4",
  "rgb": {
    "r": 102,
    "g": 183,
    "b": 244
  },
  "hsl": {
    "h": 205.775,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.75251,
    "c": 0.11893,
    "h": 243
  },
  "luminance": 0.43223
}

Semantic roles & 50–950 ramp

primary

#66B7F4

secondary

#F1D8C5

accent

#6302E3

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B7F4

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

Preview Lab → · Contrast checker → · Palette generator →