#40BBE6#40BBE6

#40BBE6 is a light, vivid cyan. Relative luminance 0.423; OKLCH L 74.3% C 0.122 H 225.7°. Best body text is #000000 at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#40BBE6
RGB	rgb(64, 187, 230)
HSL	hsl(196, 77%, 58%)
HSV	hsv(196, 72%, 90%)
CMYK	cmyk(72.2%, 18.7%, 0%, 9.8%)
CIE-LAB	lab(71.10, -19.95, -31.20)
CIE-LCH	lch(71.10, 37.04, 237.40°)
OKLab	oklab(74.26% -0.0853 -0.0874)
OKLCH	oklch(74.26% 0.122 225.7)
XYZ	xyz(34.1618, 42.3398, 81.2195)
Luminance	0.4234 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40BBE6 #E66B40

analogous

#40E6BE #40BBE6 #4068E6

triadic

#40BBE6 #E640BB #BBE640

tetradic

#40BBE6 #BE40E6 #E66B40 #68E640

square

#40BBE6 #BE40E6 #E66B40 #68E640

split-complementary

#40BBE6 #E64068 #E6BE40

monochromatic

#147698 #1BA0CE #40BBE6 #76CEED #ACE2F4

Accessibility & contrast

On white

2.22

#40BBE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.47

#40BBE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40BBE6

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40BBE6	#FFFFFF	#000000	##000000
##40BBE6	1.00	2.22	9.47	9.47
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.47	21.00	1.00	1.00
##000000	9.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B7E8

Deuteranopia (green-blind)

#8DA7E5

Tritanopia (blue-blind)

#00C8C9

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #40bbe6;
/* rgb */ color: rgb(64, 187, 230);
/* oklch */ color: oklch(74.3% 0.122 225.7);

Tailwind

colors: {
  custom: {
    50: '#8acfee',
    500: '#40bbe6',
    950: '#000000',
  },
}

SCSS

$custom: #40bbe6;
$custom-light: #8acfee;
$custom-dark: #000000;

JSON

{
  "hex": "#40bbe6",
  "rgb": {
    "r": 64,
    "g": 187,
    "b": 230
  },
  "hsl": {
    "h": 195.542,
    "s": 76.852,
    "l": 57.647
  },
  "oklch": {
    "l": 0.74259,
    "c": 0.12217,
    "h": 225.7
  },
  "luminance": 0.42344
}

Semantic roles & 50–950 ramp

primary

#40BBE6

secondary

#E2B19F

accent

#6634F3

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #40BBE6

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

Preview Lab → · Contrast checker → · Palette generator →