#40D0ED#40D0ED

#40D0ED is a light, vivid cyan. Relative luminance 0.523; OKLCH L 79.5% C 0.124 H 214.4°. Best body text is #000000 at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#40D0ED
RGB	rgb(64, 208, 237)
HSL	hsl(190, 83%, 59%)
HSV	hsv(190, 73%, 93%)
CMYK	cmyk(73%, 12.2%, 0%, 7.1%)
CIE-LAB	lab(77.47, -28.34, -25.21)
CIE-LCH	lch(77.47, 37.93, 221.66°)
OKLab	oklab(79.45% -0.1027 -0.0703)
OKLCH	oklch(79.45% 0.124 214.4)
XYZ	xyz(39.9498, 52.3114, 88.0960)
Luminance	0.5232 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40D0ED #ED5D40

analogous

#40EDB4 #40D0ED #407AED

triadic

#40D0ED #ED40D0 #D0ED40

tetradic

#40D0ED #B440ED #ED5D40 #7AED40

square

#40D0ED #B440ED #ED5D40 #7AED40

split-complementary

#40D0ED #ED407A #EDB440

monochromatic

#0F8AA3 #15BADB #40D0ED #78DEF2 #B0ECF8

Accessibility & contrast

On white

1.83

#40D0ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.46

#40D0ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40D0ED

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40D0ED	#FFFFFF	#000000	##000000
##40D0ED	1.00	1.83	11.46	11.46
#FFFFFF	1.83	1.00	21.00	21.00
#000000	11.46	21.00	1.00	1.00
##000000	11.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBC9EF

Deuteranopia (green-blind)

#A3B8ED

Tritanopia (blue-blind)

#00DBD9

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #40d0ed;
/* rgb */ color: rgb(64, 208, 237);
/* oklch */ color: oklch(79.5% 0.124 214.4);

Tailwind

colors: {
  custom: {
    50: '#8ddef2',
    500: '#40d0ed',
    950: '#000000',
  },
}

SCSS

$custom: #40d0ed;
$custom-light: #8ddef2;
$custom-dark: #000000;

JSON

{
  "hex": "#40d0ed",
  "rgb": {
    "r": 64,
    "g": 208,
    "b": 237
  },
  "hsl": {
    "h": 190.058,
    "s": 82.775,
    "l": 59.02
  },
  "oklch": {
    "l": 0.79453,
    "c": 0.12448,
    "h": 214.4
  },
  "luminance": 0.52316
}

Semantic roles & 50–950 ramp

primary

#40D0ED

secondary

#A5402C

accent

#512FF9

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1517

muted

#7F8485

Preview Lab

Preview with #40D0ED

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

Preview Lab → · Contrast checker → · Palette generator →