#64B1EF#64B1EF

#64B1EF is a light, moderate cyan. Relative luminance 0.404; OKLCH L 73.6% C 0.118 H 244.7°. Best body text is #000000 at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#64B1EF
RGB	rgb(100, 177, 239)
HSL	hsl(207, 81%, 66%)
HSV	hsv(207, 58%, 94%)
CMYK	cmyk(58.2%, 25.9%, 0%, 6.3%)
CIE-LAB	lab(69.74, -5.97, -38.12)
CIE-LCH	lch(69.74, 38.59, 261.10°)
OKLab	oklab(73.61% -0.0506 -0.107)
OKLCH	oklch(73.61% 0.118 244.7)
XYZ	xyz(36.5519, 40.3823, 87.5129)
Luminance	0.4039 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64B1EF #EFA264

analogous

#64EFE8 #64B1EF #646CEF

triadic

#64B1EF #EF64B1 #B1EF64

tetradic

#64B1EF #E864EF #EFA264 #6CEF64

square

#64B1EF #E864EF #EFA264 #6CEF64

split-complementary

#64B1EF #EF646C #EFE864

monochromatic

#1476C4 #2D95E9 #64B1EF #9BCDF5 #D3E9FA

Accessibility & contrast

On white

2.31

#64B1EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.08

#64B1EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B1EF

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64B1EF	#FFFFFF	#000000	##000000
##64B1EF	1.00	2.31	9.08	9.08
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.08	21.00	1.00	1.00
##000000	9.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96B2F2

Deuteranopia (green-blind)

#83A4EE

Tritanopia (blue-blind)

#00C0C6

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #64b1ef;
/* rgb */ color: rgb(100, 177, 239);
/* oklch */ color: oklch(73.6% 0.118 244.7);

Tailwind

colors: {
  custom: {
    50: '#9ac8f4',
    500: '#64b1ef',
    950: '#000000',
  },
}

SCSS

$custom: #64b1ef;
$custom-light: #9ac8f4;
$custom-dark: #000000;

JSON

{
  "hex": "#64b1ef",
  "rgb": {
    "r": 100,
    "g": 177,
    "b": 239
  },
  "hsl": {
    "h": 206.763,
    "s": 81.287,
    "l": 66.471
  },
  "oklch": {
    "l": 0.7361,
    "c": 0.1184,
    "h": 244.7
  },
  "luminance": 0.40386
}

Semantic roles & 50–950 ramp

primary

#64B1EF

secondary

#EED5C1

accent

#6708DE

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #64B1EF

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

Preview Lab → · Contrast checker → · Palette generator →