#40BBE3#40BBE3

#40BBE3 is a light, vivid cyan. Relative luminance 0.422; OKLCH L 74.1% C 0.120 H 223.9°. Best body text is #000000 at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#40BBE3
RGB	rgb(64, 187, 227)
HSL	hsl(195, 74%, 57%)
HSV	hsv(195, 72%, 89%)
CMYK	cmyk(71.8%, 17.6%, 0%, 11%)
CIE-LAB	lab(70.99, -20.91, -29.75)
CIE-LCH	lch(70.99, 36.36, 234.89°)
OKLab	oklab(74.13% -0.0864 -0.0833)
OKLCH	oklch(74.13% 0.12 223.9)
XYZ	xyz(33.7441, 42.1728, 79.0199)
Luminance	0.4218 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40BBE3 #E36840

analogous

#40E3BA #40BBE3 #406AE3

triadic

#40BBE3 #E340BB #BBE340

tetradic

#40BBE3 #BA40E3 #E36840 #6AE340

square

#40BBE3 #BA40E3 #E36840 #6AE340

split-complementary

#40BBE3 #E3406A #E3BA40

monochromatic

#167493 #1D9EC8 #40BBE3 #75CEEB #ABE1F3

Accessibility & contrast

On white

2.23

#40BBE3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.44

#40BBE3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40BBE3

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40BBE3	#FFFFFF	#000000	##000000
##40BBE3	1.00	2.23	9.44	9.44
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.44	21.00	1.00	1.00
##000000	9.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B7E5

Deuteranopia (green-blind)

#8EA7E3

Tritanopia (blue-blind)

#00C7C8

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #40bbe3;
/* rgb */ color: rgb(64, 187, 227);
/* oklch */ color: oklch(74.1% 0.120 223.9);

Tailwind

colors: {
  custom: {
    50: '#8acfec',
    500: '#40bbe3',
    950: '#000000',
  },
}

SCSS

$custom: #40bbe3;
$custom-light: #8acfec;
$custom-dark: #000000;

JSON

{
  "hex": "#40bbe3",
  "rgb": {
    "r": 64,
    "g": 187,
    "b": 227
  },
  "hsl": {
    "h": 194.724,
    "s": 74.429,
    "l": 57.059
  },
  "oklch": {
    "l": 0.74129,
    "c": 0.12002,
    "h": 223.9
  },
  "luminance": 0.42177
}

Semantic roles & 50–950 ramp

primary

#40BBE3

secondary

#E1AF9E

accent

#6437F1

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0D1416

muted

#7E8284

Preview Lab

Preview with #40BBE3

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

Preview Lab → · Contrast checker → · Palette generator →