#66B4F3#66B4F3

#66B4F3 is a light, moderate cyan. Relative luminance 0.419; OKLCH L 74.5% C 0.120 H 244.8°. Best body text is #000000 at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#66B4F3
RGB	rgb(102, 180, 243)
HSL	hsl(207, 85%, 68%)
HSV	hsv(207, 58%, 95%)
CMYK	cmyk(58%, 25.9%, 0%, 4.7%)
CIE-LAB	lab(70.83, -6.00, -38.60)
CIE-LCH	lch(70.83, 39.06, 261.17°)
OKLab	oklab(74.54% -0.0511 -0.1084)
OKLCH	oklch(74.54% 0.12 244.8)
XYZ	xyz(37.9725, 41.9349, 90.8698)
Luminance	0.4194 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B4F3 #F3A566

analogous

#66F3EC #66B4F3 #666DF3

triadic

#66B4F3 #F366B4 #B4F366

tetradic

#66B4F3 #EC66F3 #F3A566 #6DF366

square

#66B4F3 #EC66F3 #F3A566 #6DF366

split-complementary

#66B4F3 #F3666D #F3EC66

monochromatic

#1079CE #2D98EF #66B4F3 #9FD0F7 #D7ECFC

Accessibility & contrast

On white

2.24

#66B4F3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.39

#66B4F3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B4F3

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B4F3	#FFFFFF	#000000	##000000
##66B4F3	1.00	2.24	9.39	9.39
#FFFFFF	2.24	1.00	21.00	21.00
#000000	9.39	21.00	1.00	1.00
##000000	9.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B5F6

Deuteranopia (green-blind)

#86A7F2

Tritanopia (blue-blind)

#00C3CA

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #66b4f3;
/* rgb */ color: rgb(102, 180, 243);
/* oklch */ color: oklch(74.5% 0.120 244.8);

Tailwind

colors: {
  custom: {
    50: '#9ccaf7',
    500: '#66b4f3',
    950: '#000000',
  },
}

SCSS

$custom: #66b4f3;
$custom-light: #9ccaf7;
$custom-dark: #000000;

JSON

{
  "hex": "#66b4f3",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 243
  },
  "hsl": {
    "h": 206.809,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.74544,
    "c": 0.11981,
    "h": 244.8
  },
  "luminance": 0.41938
}

Semantic roles & 50–950 ramp

primary

#66B4F3

secondary

#F0D8C5

accent

#6704E2

background

#FAFCFF

surface

#F4F8FE

border

#CED1D6

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B4F3

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

Preview Lab → · Contrast checker → · Palette generator →