#64B5DF#64B5DF

#64B5DF is a light, moderate cyan. Relative luminance 0.411; OKLCH L 73.8% C 0.100 H 233.0°. Best body text is #000000 at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#64B5DF
RGB	rgb(100, 181, 223)
HSL	hsl(200, 66%, 63%)
HSV	hsv(200, 55%, 87%)
CMYK	cmyk(55.2%, 18.8%, 0%, 12.5%)
CIE-LAB	lab(70.23, -12.99, -28.64)
CIE-LCH	lch(70.23, 31.45, 245.60°)
OKLab	oklab(73.79% -0.0602 -0.0798)
OKLCH	oklch(73.79% 0.1 233)
XYZ	xyz(35.0937, 41.0817, 75.8779)
Luminance	0.4108 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64B5DF #DF8E64

analogous

#64DFCB #64B5DF #6477DF

triadic

#64B5DF #DF64B5 #B5DF64

tetradic

#64B5DF #CB64DF #DF8E64 #77DF64

square

#64B5DF #CB64DF #DF8E64 #77DF64

split-complementary

#64B5DF #DF6477 #DFCB64

monochromatic

#2279A6 #319DD5 #64B5DF #97CDE9 #C9E5F4

Accessibility & contrast

On white

2.28

#64B5DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.22

#64B5DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B5DF

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64B5DF	#FFFFFF	#000000	##000000
##64B5DF	1.00	2.28	9.22	9.22
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.22	21.00	1.00	1.00
##000000	9.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B3E1

Deuteranopia (green-blind)

#8FA6DE

Tritanopia (blue-blind)

#00C0C3

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #64b5df;
/* rgb */ color: rgb(100, 181, 223);
/* oklch */ color: oklch(73.8% 0.100 233.0);

Tailwind

colors: {
  custom: {
    50: '#99cbe9',
    500: '#64b5df',
    950: '#000000',
  },
}

SCSS

$custom: #64b5df;
$custom-light: #99cbe9;
$custom-dark: #000000;

JSON

{
  "hex": "#64b5df",
  "rgb": {
    "r": 100,
    "g": 181,
    "b": 223
  },
  "hsl": {
    "h": 200.488,
    "s": 65.775,
    "l": 63.333
  },
  "oklch": {
    "l": 0.7379,
    "c": 0.09999,
    "h": 233
  },
  "luminance": 0.41085
}

Semantic roles & 50–950 ramp

primary

#64B5DF

secondary

#E5C8B9

accent

#5618CE

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #64B5DF

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

Preview Lab → · Contrast checker → · Palette generator →