#64B3E9#64B3E9

#64B3E9 is a light, moderate cyan. Relative luminance 0.408; OKLCH L 73.8% C 0.111 H 240.4°. Best body text is #000000 at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#64B3E9
RGB	rgb(100, 179, 233)
HSL	hsl(204, 75%, 65%)
HSV	hsv(204, 57%, 91%)
CMYK	cmyk(57.1%, 23.2%, 0%, 8.6%)
CIE-LAB	lab(70.06, -8.91, -34.37)
CIE-LCH	lch(70.06, 35.50, 255.47°)
OKLab	oklab(73.78% -0.0546 -0.0962)
OKLCH	oklch(73.78% 0.111 240.4)
XYZ	xyz(36.0782, 40.8295, 83.0546)
Luminance	0.4083 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64B3E9 #E99A64

analogous

#64E9DC #64B3E9 #6470E9

triadic

#64B3E9 #E964B3 #B3E964

tetradic

#64B3E9 #DC64E9 #E99A64 #70E964

square

#64B3E9 #DC64E9 #E99A64 #70E964

split-complementary

#64B3E9 #E96470 #E9DC64

monochromatic

#1A78B8 #2E99E1 #64B3E9 #9ACDF1 #CFE8F8

Accessibility & contrast

On white

2.29

#64B3E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.17

#64B3E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B3E9

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64B3E9	#FFFFFF	#000000	##000000
##64B3E9	1.00	2.29	9.17	9.17
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.17	21.00	1.00	1.00
##000000	9.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB3EC

Deuteranopia (green-blind)

#89A5E8

Tritanopia (blue-blind)

#00C0C5

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #64b3e9;
/* rgb */ color: rgb(100, 179, 233);
/* oklch */ color: oklch(73.8% 0.111 240.4);

Tailwind

colors: {
  custom: {
    50: '#9ac9f0',
    500: '#64b3e9',
    950: '#000000',
  },
}

SCSS

$custom: #64b3e9;
$custom-light: #9ac9f0;
$custom-dark: #000000;

JSON

{
  "hex": "#64b3e9",
  "rgb": {
    "r": 100,
    "g": 179,
    "b": 233
  },
  "hsl": {
    "h": 204.361,
    "s": 75.141,
    "l": 65.294
  },
  "oklch": {
    "l": 0.73779,
    "c": 0.11066,
    "h": 240.4
  },
  "luminance": 0.40833
}

Semantic roles & 50–950 ramp

primary

#64B3E9

secondary

#EBD0BE

accent

#600ED7

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #64B3E9

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

Preview Lab → · Contrast checker → · Palette generator →