#40C3EA#40C3EA

#40C3EA is a light, vivid cyan. Relative luminance 0.461; OKLCH L 76.3% C 0.123 H 222.1°. Best body text is #000000 at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#40C3EA
RGB	rgb(64, 195, 234)
HSL	hsl(194, 80%, 58%)
HSV	hsv(194, 73%, 92%)
CMYK	cmyk(72.6%, 16.7%, 0%, 8.2%)
CIE-LAB	lab(73.58, -22.78, -29.55)
CIE-LCH	lch(73.58, 37.32, 232.37°)
OKLab	oklab(76.3% -0.0915 -0.0827)
OKLCH	oklch(76.3% 0.123 222.1)
XYZ	xyz(36.4746, 46.0564, 84.7934)
Luminance	0.4606 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C3EA #EA6740

analogous

#40EABC #40C3EA #406EEA

triadic

#40C3EA #EA40C3 #C3EA40

tetradic

#40C3EA #BC40EA #EA6740 #6EEA40

square

#40C3EA #BC40EA #EA6740 #6EEA40

split-complementary

#40C3EA #EA406E #EABC40

monochromatic

#117E9E #17AAD5 #40C3EA #77D4F0 #AEE6F6

Accessibility & contrast

On white

2.06

#40C3EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.21

#40C3EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C3EA

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C3EA	#FFFFFF	#000000	##000000
##40C3EA	1.00	2.06	10.21	10.21
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.21	21.00	1.00	1.00
##000000	10.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACBEEC

Deuteranopia (green-blind)

#95ADEA

Tritanopia (blue-blind)

#00CFD0

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #40c3ea;
/* rgb */ color: rgb(64, 195, 234);
/* oklch */ color: oklch(76.3% 0.123 222.1);

Tailwind

colors: {
  custom: {
    50: '#8bd5f0',
    500: '#40c3ea',
    950: '#000000',
  },
}

SCSS

$custom: #40c3ea;
$custom-light: #8bd5f0;
$custom-dark: #000000;

JSON

{
  "hex": "#40c3ea",
  "rgb": {
    "r": 64,
    "g": 195,
    "b": 234
  },
  "hsl": {
    "h": 193.765,
    "s": 80.189,
    "l": 58.431
  },
  "oklch": {
    "l": 0.76295,
    "c": 0.12332,
    "h": 222.1
  },
  "luminance": 0.46061
}

Semantic roles & 50–950 ramp

primary

#40C3EA

secondary

#E5B1A1

accent

#5E31F7

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #40C3EA

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

Preview Lab → · Contrast checker → · Palette generator →