#66A8F0#66A8F0

#66A8F0 is a light, vivid cyan. Relative luminance 0.371; OKLCH L 71.8% C 0.126 H 251.8°. Best body text is #000000 at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#66A8F0
RGB	rgb(102, 168, 240)
HSL	hsl(211, 82%, 67%)
HSV	hsv(211, 58%, 94%)
CMYK	cmyk(57.5%, 30%, 0%, 5.9%)
CIE-LAB	lab(67.37, -0.25, -42.37)
CIE-LCH	lch(67.37, 42.37, 269.66°)
OKLab	oklab(71.78% -0.0391 -0.1194)
OKLCH	oklch(71.78% 0.126 251.8)
XYZ	xyz(35.2047, 37.1182, 87.7305)
Luminance	0.3712 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A8F0 #F0AE66

analogous

#66EDF0 #66A8F0 #6966F0

triadic

#66A8F0 #F066A8 #A8F066

tetradic

#66A8F0 #F066ED #F0AE66 #66F069

square

#66A8F0 #F066ED #F0AE66 #66F069

split-complementary

#66A8F0 #F06966 #EDF066

monochromatic

#146AC8 #2E88EB #66A8F0 #9EC8F5 #D5E7FB

Accessibility & contrast

On white

2.49

#66A8F0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.42

#66A8F0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A8F0

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A8F0	#FFFFFF	#000000	##000000
##66A8F0	1.00	2.49	8.42	8.42
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.42	21.00	1.00	1.00
##000000	8.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8AABF3

Deuteranopia (green-blind)

#789EEF

Tritanopia (blue-blind)

#00B9C1

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #66a8f0;
/* rgb */ color: rgb(102, 168, 240);
/* oklch */ color: oklch(71.8% 0.126 251.8);

Tailwind

colors: {
  custom: {
    50: '#9bc1f5',
    500: '#66a8f0',
    950: '#000000',
  },
}

SCSS

$custom: #66a8f0;
$custom-light: #9bc1f5;
$custom-dark: #000000;

JSON

{
  "hex": "#66a8f0",
  "rgb": {
    "r": 102,
    "g": 168,
    "b": 240
  },
  "hsl": {
    "h": 211.304,
    "s": 82.143,
    "l": 67.059
  },
  "oklch": {
    "l": 0.71778,
    "c": 0.12563,
    "h": 251.8
  },
  "luminance": 0.37121
}

Semantic roles & 50–950 ramp

primary

#66A8F0

secondary

#EFDAC3

accent

#7707DF

background

#FAFBFE

surface

#F4F7FD

border

#CED0D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A8F0

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

Preview Lab → · Contrast checker → · Palette generator →