#64B5DD#64B5DD

#64B5DD is a light, moderate cyan. Relative luminance 0.410; OKLCH L 73.7% C 0.098 H 231.7°. Best body text is #000000 at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#64B5DD
RGB	rgb(100, 181, 221)
HSL	hsl(200, 64%, 63%)
HSV	hsv(200, 55%, 87%)
CMYK	cmyk(54.8%, 18.1%, 0%, 13.3%)
CIE-LAB	lab(70.16, -13.58, -27.66)
CIE-LCH	lch(70.16, 30.82, 243.84°)
OKLab	oklab(73.71% -0.0609 -0.077)
OKLCH	oklch(73.71% 0.098 231.7)
XYZ	xyz(34.8256, 40.9744, 74.4662)
Luminance	0.4098 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64B5DD #DD8C64

analogous

#64DDC9 #64B5DD #6478DD

triadic

#64B5DD #DD64B5 #B5DD64

tetradic

#64B5DD #C964DD #DD8C64 #78DD64

square

#64B5DD #C964DD #DD8C64 #78DD64

split-complementary

#64B5DD #DD6478 #DDC964

monochromatic

#2479A3 #329DD2 #64B5DD #96CDE8 #C8E5F3

Accessibility & contrast

On white

2.28

#64B5DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.20

#64B5DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B5DD

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64B5DD	#FFFFFF	#000000	##000000
##64B5DD	1.00	2.28	9.20	9.20
#FFFFFF	2.28	1.00	21.00	21.00
#000000	9.20	21.00	1.00	1.00
##000000	9.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B3DF

Deuteranopia (green-blind)

#90A6DC

Tritanopia (blue-blind)

#00C0C2

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #64b5dd;
/* rgb */ color: rgb(100, 181, 221);
/* oklch */ color: oklch(73.7% 0.098 231.7);

Tailwind

colors: {
  custom: {
    50: '#99cbe7',
    500: '#64b5dd',
    950: '#000000',
  },
}

SCSS

$custom: #64b5dd;
$custom-light: #99cbe7;
$custom-dark: #000000;

JSON

{
  "hex": "#64b5dd",
  "rgb": {
    "r": 100,
    "g": 181,
    "b": 221
  },
  "hsl": {
    "h": 199.835,
    "s": 64.021,
    "l": 62.941
  },
  "oklch": {
    "l": 0.73706,
    "c": 0.09822,
    "h": 231.7
  },
  "luminance": 0.40978
}

Semantic roles & 50–950 ramp

primary

#64B5DD

secondary

#E4C7B9

accent

#551ACC

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #64B5DD

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

Preview Lab → · Contrast checker → · Palette generator →