#40C5ED#40C5ED

#40C5ED is a light, vivid cyan. Relative luminance 0.471; OKLCH L 76.9% C 0.125 H 222.4°. Best body text is #000000 at 10.43:1 contrast (WCAG AA passes).

Color values

HEX	#40C5ED
RGB	rgb(64, 197, 237)
HSL	hsl(194, 83%, 59%)
HSV	hsv(194, 73%, 93%)
CMYK	cmyk(73%, 16.9%, 0%, 7.1%)
CIE-LAB	lab(74.27, -22.85, -30.11)
CIE-LCH	lch(74.27, 37.80, 232.80°)
OKLab	oklab(76.89% -0.0923 -0.0842)
OKLCH	oklch(76.89% 0.125 222.4)
XYZ	xyz(37.3603, 47.1325, 87.2328)
Luminance	0.4714 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C5ED #ED6840

analogous

#40EDBF #40C5ED #406FED

triadic

#40C5ED #ED40C5 #C5ED40

tetradic

#40C5ED #BF40ED #ED6840 #6FED40

square

#40C5ED #BF40ED #ED6840 #6FED40

split-complementary

#40C5ED #ED406F #EDBF40

monochromatic

#0F81A3 #15ADDB #40C5ED #78D6F2 #B0E7F8

Accessibility & contrast

On white

2.01

#40C5ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.43

#40C5ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C5ED

10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C5ED	#FFFFFF	#000000	##000000
##40C5ED	1.00	2.01	10.43	10.43
#FFFFFF	2.01	1.00	21.00	21.00
#000000	10.43	21.00	1.00	1.00
##000000	10.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEC0EF

Deuteranopia (green-blind)

#96AFED

Tritanopia (blue-blind)

#00D1D2

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #40c5ed;
/* rgb */ color: rgb(64, 197, 237);
/* oklch */ color: oklch(76.9% 0.125 222.4);

Tailwind

colors: {
  custom: {
    50: '#8cd6f3',
    500: '#40c5ed',
    950: '#000000',
  },
}

SCSS

$custom: #40c5ed;
$custom-light: #8cd6f3;
$custom-dark: #000000;

JSON

{
  "hex": "#40c5ed",
  "rgb": {
    "r": 64,
    "g": 197,
    "b": 237
  },
  "hsl": {
    "h": 193.873,
    "s": 82.775,
    "l": 59.02
  },
  "oklch": {
    "l": 0.76887,
    "c": 0.12496,
    "h": 222.4
  },
  "luminance": 0.47137
}

Semantic roles & 50–950 ramp

primary

#40C5ED

secondary

#E6B2A2

accent

#5D2FF9

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1417

muted

#7E8385

Preview Lab

Preview with #40C5ED

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

Preview Lab → · Contrast checker → · Palette generator →