#40C6E7#40C6E7

#40C6E7 is a light, vivid cyan. Relative luminance 0.472; OKLCH L 76.9% C 0.121 H 218.0°. Best body text is #000000 at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#40C6E7
RGB	rgb(64, 198, 231)
HSL	hsl(192, 78%, 58%)
HSV	hsv(192, 72%, 91%)
CMYK	cmyk(72.3%, 14.3%, 0%, 9.4%)
CIE-LAB	lab(74.35, -25.24, -26.76)
CIE-LCH	lch(74.35, 36.79, 226.68°)
OKLab	oklab(76.87% -0.0955 -0.0747)
OKLCH	oklch(76.87% 0.121 218)
XYZ	xyz(36.7262, 47.2434, 82.7691)
Luminance	0.4725 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C6E7 #E76140

analogous

#40E7B4 #40C6E7 #4073E7

triadic

#40C6E7 #E740C6 #C6E740

tetradic

#40C6E7 #B440E7 #E76140 #73E740

square

#40C6E7 #B440E7 #E76140 #73E740

split-complementary

#40C6E7 #E74073 #E7B440

monochromatic

#137F99 #1AACD0 #40C6E7 #76D6EE #ADE6F5

Accessibility & contrast

On white

2.01

#40C6E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.45

#40C6E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C6E7

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C6E7	#FFFFFF	#000000	##000000
##40C6E7	1.00	2.01	10.45	10.45
#FFFFFF	2.01	1.00	21.00	21.00
#000000	10.45	21.00	1.00	1.00
##000000	10.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1C0E9

Deuteranopia (green-blind)

#9AB0E7

Tritanopia (blue-blind)

#00D1D0

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #40c6e7;
/* rgb */ color: rgb(64, 198, 231);
/* oklch */ color: oklch(76.9% 0.121 218.0);

Tailwind

colors: {
  custom: {
    50: '#8bd7ee',
    500: '#40c6e7',
    950: '#000000',
  },
}

SCSS

$custom: #40c6e7;
$custom-light: #8bd7ee;
$custom-dark: #000000;

JSON

{
  "hex": "#40c6e7",
  "rgb": {
    "r": 64,
    "g": 198,
    "b": 231
  },
  "hsl": {
    "h": 191.856,
    "s": 77.674,
    "l": 57.843
  },
  "oklch": {
    "l": 0.76871,
    "c": 0.12126,
    "h": 218
  },
  "luminance": 0.47248
}

Semantic roles & 50–950 ramp

primary

#40C6E7

secondary

#E3ADA0

accent

#5A34F4

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #40C6E7

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

Preview Lab → · Contrast checker → · Palette generator →