#64B9FD#64B9FD

#64B9FD is a light, vivid cyan. Relative luminance 0.445; OKLCH L 76.0% C 0.128 H 244.8°. Best body text is #000000 at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#64B9FD
RGB	rgb(100, 185, 253)
HSL	hsl(207, 97%, 69%)
HSV	hsv(207, 60%, 99%)
CMYK	cmyk(60.5%, 26.9%, 0%, 0.8%)
CIE-LAB	lab(72.56, -6.00, -41.31)
CIE-LCH	lch(72.56, 41.75, 261.73°)
OKLab	oklab(76.03% -0.0547 -0.1162)
OKLCH	oklch(76.03% 0.128 244.8)
XYZ	xyz(40.3275, 44.4953, 99.3727)
Luminance	0.4450 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64B9FD #FDA864

analogous

#64FDF5 #64B9FD #646DFD

triadic

#64B9FD #FD64B9 #B9FD64

tetradic

#64B9FD #F564FD #FDA864 #6DFD64

square

#64B9FD #F564FD #FDA864 #6DFD64

split-complementary

#64B9FD #FD646D #FDF564

monochromatic

#0380E4 #289EFC #64B9FD #A0D4FE #DDF0FF

Accessibility & contrast

On white

2.12

#64B9FD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.90

#64B9FD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B9FD

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64B9FD	#FFFFFF	#000000	##000000
##64B9FD	1.00	2.12	9.90	9.90
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.90	21.00	1.00	1.00
##000000	9.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BBAFF

Deuteranopia (green-blind)

#87ABFC

Tritanopia (blue-blind)

#00C9D1

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #64b9fd;
/* rgb */ color: rgb(100, 185, 253);
/* oklch */ color: oklch(76.0% 0.128 244.8);

Tailwind

colors: {
  custom: {
    50: '#9ccdfe',
    500: '#64b9fd',
    950: '#000000',
  },
}

SCSS

$custom: #64b9fd;
$custom-light: #9ccdfe;
$custom-dark: #000000;

JSON

{
  "hex": "#64b9fd",
  "rgb": {
    "r": 100,
    "g": 185,
    "b": 253
  },
  "hsl": {
    "h": 206.667,
    "s": 97.452,
    "l": 69.216
  },
  "oklch": {
    "l": 0.76028,
    "c": 0.12844,
    "h": 244.8
  },
  "luminance": 0.44499
}

Semantic roles & 50–950 ramp

primary

#64B9FD

secondary

#F5DCC8

accent

#6600E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1318

muted

#7F8286

Preview Lab

Preview with #64B9FD

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

Preview Lab → · Contrast checker → · Palette generator →