#66A5F2#66A5F2

#66A5F2 is a light, vivid cyan. Relative luminance 0.361; OKLCH L 71.2% C 0.131 H 254.3°. Best body text is #000000 at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#66A5F2
RGB	rgb(102, 165, 242)
HSL	hsl(213, 84%, 67%)
HSV	hsv(213, 58%, 95%)
CMYK	cmyk(57.9%, 31.8%, 0%, 5.1%)
CIE-LAB	lab(66.63, 2.07, -44.62)
CIE-LCH	lch(66.63, 44.67, 272.66°)
OKLab	oklab(71.23% -0.0354 -0.1259)
OKLCH	oklch(71.23% 0.131 254.3)
XYZ	xyz(34.9559, 36.1428, 89.1213)
Luminance	0.3615 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A5F2 #F2B366

analogous

#66EBF2 #66A5F2 #6D66F2

triadic

#66A5F2 #F266A5 #A5F266

tetradic

#66A5F2 #F266EB #F2B366 #66F26D

square

#66A5F2 #F266EB #F2B366 #66F26D

split-complementary

#66A5F2 #F26D66 #EBF266

monochromatic

#1165CC #2E84ED #66A5F2 #9EC6F7 #D7E7FC

Accessibility & contrast

On white

2.55

#66A5F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.23

#66A5F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A5F2

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A5F2	#FFFFFF	#000000	##000000
##66A5F2	1.00	2.55	8.23	8.23
#FFFFFF	2.55	1.00	21.00	21.00
#000000	8.23	21.00	1.00	1.00
##000000	8.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#85A9F5

Deuteranopia (green-blind)

#739CF0

Tritanopia (blue-blind)

#00B7C1

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #66a5f2;
/* rgb */ color: rgb(102, 165, 242);
/* oklch */ color: oklch(71.2% 0.131 254.3);

Tailwind

colors: {
  custom: {
    50: '#9cbff6',
    500: '#66a5f2',
    950: '#000000',
  },
}

SCSS

$custom: #66a5f2;
$custom-light: #9cbff6;
$custom-dark: #000000;

JSON

{
  "hex": "#66a5f2",
  "rgb": {
    "r": 102,
    "g": 165,
    "b": 242
  },
  "hsl": {
    "h": 213,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.71231,
    "c": 0.13081,
    "h": 254.3
  },
  "luminance": 0.36146
}

Semantic roles & 50–950 ramp

primary

#66A5F2

secondary

#F0DCC4

accent

#7E05E1

background

#FAFBFF

surface

#F4F6FE

border

#CED0D6

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A5F2

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

Preview Lab → · Contrast checker → · Palette generator →