#40D2FF#40D2FF

#40D2FF is a light, vivid cyan. Relative luminance 0.544; OKLCH L 80.7% C 0.135 H 223.3°. Best body text is #000000 at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#40D2FF
RGB	rgb(64, 210, 255)
HSL	hsl(194, 100%, 63%)
HSV	hsv(194, 75%, 100%)
CMYK	cmyk(74.9%, 17.6%, 0%, 0%)
CIE-LAB	lab(78.69, -23.72, -32.95)
CIE-LCH	lch(78.69, 40.60, 234.25°)
OKLab	oklab(80.65% -0.0979 -0.0923)
OKLCH	oklch(80.65% 0.135 223.3)
XYZ	xyz(43.2034, 54.3980, 102.8112)
Luminance	0.5440 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40D2FF #FF6D40

analogous

#40FFCC #40D2FF #4073FF

triadic

#40D2FF #FF40D2 #D2FF40

tetradic

#40D2FF #CC40FF #FF6D40 #73FF40

square

#40D2FF #CC40FF #FF6D40 #73FF40

split-complementary

#40D2FF #FF4073 #FFCC40

monochromatic

#0096C5 #03C4FF #40D2FF #7DE0FF #BAEFFF

Accessibility & contrast

On white

1.77

#40D2FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.88

#40D2FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40D2FF

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40D2FF	#FFFFFF	#000000	##000000
##40D2FF	1.00	1.77	11.88	11.88
#FFFFFF	1.77	1.00	21.00	21.00
#000000	11.88	21.00	1.00	1.00
##000000	11.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8CDFF

Deuteranopia (green-blind)

#9FBBFF

Tritanopia (blue-blind)

#00E0E1

Achromatopsia (no color)

#C3C3C3

Design tokens & code

CSS

--color: #40d2ff;
/* rgb */ color: rgb(64, 210, 255);
/* oklch */ color: oklch(80.7% 0.135 223.3);

Tailwind

colors: {
  custom: {
    50: '#8fe0ff',
    500: '#40d2ff',
    950: '#000000',
  },
}

SCSS

$custom: #40d2ff;
$custom-light: #8fe0ff;
$custom-dark: #000000;

JSON

{
  "hex": "#40d2ff",
  "rgb": {
    "r": 64,
    "g": 210,
    "b": 255
  },
  "hsl": {
    "h": 194.136,
    "s": 100,
    "l": 62.549
  },
  "oklch": {
    "l": 0.80654,
    "c": 0.13451,
    "h": 223.3
  },
  "luminance": 0.54403
}

Semantic roles & 50–950 ramp

primary

#40D2FF

secondary

#C14822

accent

#3600E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0E1518

muted

#7F8486

Preview Lab

Preview with #40D2FF

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

Preview Lab → · Contrast checker → · Palette generator →