#66AEFD#66AEFD

#66AEFD is a light, vivid cyan. Relative luminance 0.402; OKLCH L 73.7% C 0.136 H 252.1°. Best body text is #000000 at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#66AEFD
RGB	rgb(102, 174, 253)
HSL	hsl(211, 97%, 70%)
HSV	hsv(211, 60%, 99%)
CMYK	cmyk(59.7%, 31.2%, 0%, 0.8%)
CIE-LAB	lab(69.60, 0.46, -45.94)
CIE-LCH	lch(69.60, 45.94, 270.58°)
OKLab	oklab(73.72% -0.0419 -0.1297)
OKLCH	oklch(73.72% 0.136 252.1)
XYZ	xyz(38.3388, 40.1852, 98.6456)
Luminance	0.4019 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AEFD #FDB566

analogous

#66F9FD #66AEFD #6A66FD

triadic

#66AEFD #FD66AE #AEFD66

tetradic

#66AEFD #FD66F9 #FDB566 #66FD6A

square

#66AEFD #FD66F9 #FDB566 #66FD6A

split-complementary

#66AEFD #FD6A66 #F9FD66

monochromatic

#036FE6 #2A8EFC #66AEFD #A2CEFE #DFEEFF

Accessibility & contrast

On white

2.32

#66AEFD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.04

#66AEFD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AEFD

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AEFD	#FFFFFF	#000000	##000000
##66AEFD	1.00	2.32	9.04	9.04
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.04	21.00	1.00	1.00
##000000	9.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DB2FF

Deuteranopia (green-blind)

#78A3FB

Tritanopia (blue-blind)

#00C0CA

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66aefd;
/* rgb */ color: rgb(102, 174, 253);
/* oklch */ color: oklch(73.7% 0.136 252.1);

Tailwind

colors: {
  custom: {
    50: '#9dc5fe',
    500: '#66aefd',
    950: '#000000',
  },
}

SCSS

$custom: #66aefd;
$custom-light: #9dc5fe;
$custom-dark: #000000;

JSON

{
  "hex": "#66aefd",
  "rgb": {
    "r": 102,
    "g": 174,
    "b": 253
  },
  "hsl": {
    "h": 211.391,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.73723,
    "c": 0.13628,
    "h": 252.1
  },
  "luminance": 0.40189
}

Semantic roles & 50–950 ramp

primary

#66AEFD

secondary

#F5E0CA

accent

#7800E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1218

muted

#7F8186

Preview Lab

Preview with #66AEFD

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

Preview Lab → · Contrast checker → · Palette generator →