#40C0E3#40C0E3

#40C0E3 is a light, moderate cyan. Relative luminance 0.443; OKLCH L 75.3% C 0.119 H 220.1°. Best body text is #000000 at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#40C0E3
RGB	rgb(64, 192, 227)
HSL	hsl(193, 74%, 57%)
HSV	hsv(193, 72%, 89%)
CMYK	cmyk(71.8%, 15.4%, 0%, 11%)
CIE-LAB	lab(72.45, -23.47, -27.50)
CIE-LCH	lch(72.45, 36.16, 229.53°)
OKLab	oklab(75.3% -0.0913 -0.0768)
OKLCH	oklch(75.3% 0.119 220.1)
XYZ	xyz(34.8233, 44.3312, 79.3796)
Luminance	0.4434 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C0E3 #E36340

analogous

#40E3B4 #40C0E3 #406FE3

triadic

#40C0E3 #E340C0 #C0E340

tetradic

#40C0E3 #B440E3 #E36340 #6FE340

square

#40C0E3 #B440E3 #E36340 #6FE340

split-complementary

#40C0E3 #E3406F #E3B440

monochromatic

#167893 #1DA4C8 #40C0E3 #75D2EB #ABE3F3

Accessibility & contrast

On white

2.13

#40C0E3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.87

#40C0E3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C0E3

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C0E3	#FFFFFF	#000000	##000000
##40C0E3	1.00	2.13	9.87	9.87
#FFFFFF	2.13	1.00	21.00	21.00
#000000	9.87	21.00	1.00	1.00
##000000	9.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ABBBE5

Deuteranopia (green-blind)

#94ABE3

Tritanopia (blue-blind)

#00CBCB

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #40c0e3;
/* rgb */ color: rgb(64, 192, 227);
/* oklch */ color: oklch(75.3% 0.119 220.1);

Tailwind

colors: {
  custom: {
    50: '#8ad3ec',
    500: '#40c0e3',
    950: '#000000',
  },
}

SCSS

$custom: #40c0e3;
$custom-light: #8ad3ec;
$custom-dark: #000000;

JSON

{
  "hex": "#40c0e3",
  "rgb": {
    "r": 64,
    "g": 192,
    "b": 227
  },
  "hsl": {
    "h": 192.883,
    "s": 74.429,
    "l": 57.059
  },
  "oklch": {
    "l": 0.753,
    "c": 0.1193,
    "h": 220.1
  },
  "luminance": 0.44335
}

Semantic roles & 50–950 ramp

primary

#40C0E3

secondary

#E1AC9E

accent

#5F37F1

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0D1416

muted

#7E8284

Preview Lab

Preview with #40C0E3

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

Preview Lab → · Contrast checker → · Palette generator →