#40C4EA#40C4EA

#40C4EA is a light, vivid cyan. Relative luminance 0.465; OKLCH L 76.5% C 0.123 H 221.4°. Best body text is #000000 at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#40C4EA
RGB	rgb(64, 196, 234)
HSL	hsl(193, 80%, 58%)
HSV	hsv(193, 73%, 92%)
CMYK	cmyk(72.6%, 16.2%, 0%, 8.2%)
CIE-LAB	lab(73.87, -23.29, -29.11)
CIE-LCH	lch(73.87, 37.28, 231.33°)
OKLab	oklab(76.53% -0.0925 -0.0814)
OKLCH	oklch(76.53% 0.123 221.4)
XYZ	xyz(36.6994, 46.5060, 84.8683)
Luminance	0.4651 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C4EA #EA6640

analogous

#40EABB #40C4EA #406FEA

triadic

#40C4EA #EA40C4 #C4EA40

tetradic

#40C4EA #BB40EA #EA6640 #6FEA40

square

#40C4EA #BB40EA #EA6640 #6FEA40

split-complementary

#40C4EA #EA406F #EABB40

monochromatic

#117F9E #17ABD5 #40C4EA #77D5F0 #AEE6F6

Accessibility & contrast

On white

2.04

#40C4EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.30

#40C4EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C4EA

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C4EA	#FFFFFF	#000000	##000000
##40C4EA	1.00	2.04	10.30	10.30
#FFFFFF	2.04	1.00	21.00	21.00
#000000	10.30	21.00	1.00	1.00
##000000	10.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADBFEC

Deuteranopia (green-blind)

#96AEEA

Tritanopia (blue-blind)

#00D0D0

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #40c4ea;
/* rgb */ color: rgb(64, 196, 234);
/* oklch */ color: oklch(76.5% 0.123 221.4);

Tailwind

colors: {
  custom: {
    50: '#8bd6f0',
    500: '#40c4ea',
    950: '#000000',
  },
}

SCSS

$custom: #40c4ea;
$custom-light: #8bd6f0;
$custom-dark: #000000;

JSON

{
  "hex": "#40c4ea",
  "rgb": {
    "r": 64,
    "g": 196,
    "b": 234
  },
  "hsl": {
    "h": 193.412,
    "s": 80.189,
    "l": 58.431
  },
  "oklch": {
    "l": 0.76528,
    "c": 0.12319,
    "h": 221.4
  },
  "luminance": 0.4651
}

Semantic roles & 50–950 ramp

primary

#40C4EA

secondary

#E5B0A1

accent

#5D31F7

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #40C4EA

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

Preview Lab → · Contrast checker → · Palette generator →