#40EFFF#40EFFF

#40EFFF is a very light, vivid teal. Relative luminance 0.700; OKLCH L 87.4% C 0.137 H 204.3°. Best body text is #000000 at 15.01:1 contrast (WCAG AA passes).

Color values

HEX	#40EFFF
RGB	rgb(64, 239, 255)
HSL	hsl(185, 100%, 63%)
HSV	hsv(185, 75%, 100%)
CMYK	cmyk(74.9%, 6.3%, 0%, 0%)
CIE-LAB	lab(87.01, -37.67, -20.24)
CIE-LCH	lch(87.01, 42.76, 208.25°)
OKLab	oklab(87.36% -0.1246 -0.0563)
OKLCH	oklch(87.36% 0.137 204.3)
XYZ	xyz(51.0228, 70.0367, 105.4177)
Luminance	0.7004 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40EFFF #FF5040

analogous

#40FFAF #40EFFF #4090FF

triadic

#40EFFF #FF40EF #EFFF40

tetradic

#40EFFF #AF40FF #FF5040 #90FF40

square

#40EFFF #AF40FF #FF5040 #90FF40

split-complementary

#40EFFF #FF4090 #FFAF40

monochromatic

#00B4C5 #03EAFF #40EFFF #7DF4FF #BAF9FF

Accessibility & contrast

On white

1.40

#40EFFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.01

#40EFFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40EFFF

15.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40EFFF	#FFFFFF	#000000	##000000
##40EFFF	1.00	1.40	15.01	15.01
#FFFFFF	1.40	1.00	21.00	21.00
#000000	15.01	21.00	1.00	1.00
##000000	15.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DBE5FF

Deuteranopia (green-blind)

#C1D2FF

Tritanopia (blue-blind)

#00F9F4

Achromatopsia (no color)

#DADADA

Design tokens & code

CSS

--color: #40efff;
/* rgb */ color: rgb(64, 239, 255);
/* oklch */ color: oklch(87.4% 0.137 204.3);

Tailwind

colors: {
  custom: {
    50: '#92f4ff',
    500: '#40efff',
    950: '#000000',
  },
}

SCSS

$custom: #40efff;
$custom-light: #92f4ff;
$custom-dark: #000000;

JSON

{
  "hex": "#40efff",
  "rgb": {
    "r": 64,
    "g": 239,
    "b": 255
  },
  "hsl": {
    "h": 185.026,
    "s": 100,
    "l": 62.549
  },
  "oklch": {
    "l": 0.87361,
    "c": 0.13675,
    "h": 204.3
  },
  "luminance": 0.70043
}

Semantic roles & 50–950 ramp

primary

#40EFFF

secondary

#C12F22

accent

#1300E6

background

#FCFFFF

surface

#F5FEFF

border

#CFD6D7

text

#0F1718

muted

#808586

Preview Lab

Preview with #40EFFF

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

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