#66B3F1#66B3F1

#66B3F1 is a light, moderate cyan. Relative luminance 0.414; OKLCH L 74.2% C 0.118 H 244.7°. Best body text is #000000 at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#66B3F1
RGB	rgb(102, 179, 241)
HSL	hsl(207, 83%, 67%)
HSV	hsv(207, 58%, 95%)
CMYK	cmyk(57.7%, 25.7%, 0%, 5.5%)
CIE-LAB	lab(70.46, -6.06, -38.08)
CIE-LCH	lch(70.46, 38.56, 260.95°)
OKLab	oklab(74.23% -0.0506 -0.1069)
OKLCH	oklch(74.23% 0.118 244.7)
XYZ	xyz(37.4709, 41.4125, 89.2208)
Luminance	0.4142 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B3F1 #F1A466

analogous

#66F1EA #66B3F1 #666DF1

triadic

#66B3F1 #F166B3 #B3F166

tetradic

#66B3F1 #EA66F1 #F1A466 #6DF166

square

#66B3F1 #EA66F1 #F1A466 #6DF166

split-complementary

#66B3F1 #F1666D #F1EA66

monochromatic

#1278CA #2E97EC #66B3F1 #9ECFF6 #D6EBFB

Accessibility & contrast

On white

2.26

#66B3F1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.28

#66B3F1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B3F1

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B3F1	#FFFFFF	#000000	##000000
##66B3F1	1.00	2.26	9.28	9.28
#FFFFFF	2.26	1.00	21.00	21.00
#000000	9.28	21.00	1.00	1.00
##000000	9.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B4F4

Deuteranopia (green-blind)

#85A6F0

Tritanopia (blue-blind)

#00C2C8

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #66b3f1;
/* rgb */ color: rgb(102, 179, 241);
/* oklch */ color: oklch(74.2% 0.118 244.7);

Tailwind

colors: {
  custom: {
    50: '#9cc9f6',
    500: '#66b3f1',
    950: '#000000',
  },
}

SCSS

$custom: #66b3f1;
$custom-light: #9cc9f6;
$custom-dark: #000000;

JSON

{
  "hex": "#66b3f1",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 241
  },
  "hsl": {
    "h": 206.763,
    "s": 83.234,
    "l": 67.255
  },
  "oklch": {
    "l": 0.74231,
    "c": 0.11827,
    "h": 244.7
  },
  "luminance": 0.41416
}

Semantic roles & 50–950 ramp

primary

#66B3F1

secondary

#EFD7C3

accent

#6706E0

background

#FAFCFF

surface

#F4F8FE

border

#CED1D6

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B3F1

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

Preview Lab → · Contrast checker → · Palette generator →