#40C4ED#40C4ED

#40C4ED is a light, vivid cyan. Relative luminance 0.467; OKLCH L 76.7% C 0.125 H 223.1°. Best body text is #000000 at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#40C4ED
RGB	rgb(64, 196, 237)
HSL	hsl(194, 83%, 59%)
HSV	hsv(194, 73%, 93%)
CMYK	cmyk(73%, 17.3%, 0%, 7.1%)
CIE-LAB	lab(73.98, -22.34, -30.55)
CIE-LCH	lch(73.98, 37.85, 233.82°)
OKLab	oklab(76.66% -0.0914 -0.0855)
OKLCH	oklch(76.66% 0.125 223.1)
XYZ	xyz(37.1340, 46.6799, 87.1574)
Luminance	0.4668 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C4ED #ED6940

analogous

#40EDC0 #40C4ED #406EED

triadic

#40C4ED #ED40C4 #C4ED40

tetradic

#40C4ED #C040ED #ED6940 #6EED40

square

#40C4ED #C040ED #ED6940 #6EED40

split-complementary

#40C4ED #ED406E #EDC040

monochromatic

#0F80A3 #15ACDB #40C4ED #78D5F2 #B0E7F8

Accessibility & contrast

On white

2.03

#40C4ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.34

#40C4ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C4ED

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C4ED	#FFFFFF	#000000	##000000
##40C4ED	1.00	2.03	10.34	10.34
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.34	21.00	1.00	1.00
##000000	10.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADBFEF

Deuteranopia (green-blind)

#95AEED

Tritanopia (blue-blind)

#00D1D1

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #40c4ed;
/* rgb */ color: rgb(64, 196, 237);
/* oklch */ color: oklch(76.7% 0.125 223.1);

Tailwind

colors: {
  custom: {
    50: '#8cd6f3',
    500: '#40c4ed',
    950: '#000000',
  },
}

SCSS

$custom: #40c4ed;
$custom-light: #8cd6f3;
$custom-dark: #000000;

JSON

{
  "hex": "#40c4ed",
  "rgb": {
    "r": 64,
    "g": 196,
    "b": 237
  },
  "hsl": {
    "h": 194.22,
    "s": 82.775,
    "l": 59.02
  },
  "oklch": {
    "l": 0.76655,
    "c": 0.12514,
    "h": 223.1
  },
  "luminance": 0.46684
}

Semantic roles & 50–950 ramp

primary

#40C4ED

secondary

#E6B3A2

accent

#5F2FF9

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1417

muted

#7E8385

Preview Lab

Preview with #40C4ED

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

Preview Lab → · Contrast checker → · Palette generator →