#40B9D6#40B9D6

#40B9D6 is a light, moderate cyan. Relative luminance 0.406; OKLCH L 73.1% C 0.112 H 217.1°. Best body text is #000000 at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#40B9D6
RGB	rgb(64, 185, 214)
HSL	hsl(192, 65%, 55%)
HSV	hsv(192, 70%, 84%)
CMYK	cmyk(70.1%, 13.6%, 0%, 16.1%)
CIE-LAB	lab(69.92, -23.99, -24.29)
CIE-LCH	lch(69.92, 34.14, 225.36°)
OKLab	oklab(73.11% -0.0894 -0.0677)
OKLCH	oklch(73.11% 0.112 217.1)
XYZ	xyz(31.5958, 40.6393, 69.7843)
Luminance	0.4064 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B9D6 #D65D40

analogous

#40D6A8 #40B9D6 #406ED6

triadic

#40B9D6 #D640B9 #B9D640

tetradic

#40B9D6 #A840D6 #D65D40 #6ED640

square

#40B9D6 #A840D6 #D65D40 #6ED640

split-complementary

#40B9D6 #D6406E #D6A840

monochromatic

#1B6D80 #2697B2 #40B9D6 #72CBE1 #A5DEEC

Accessibility & contrast

On white

2.30

#40B9D6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.13

#40B9D6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B9D6

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B9D6	#FFFFFF	#000000	##000000
##40B9D6	1.00	2.30	9.13	9.13
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.13	21.00	1.00	1.00
##000000	9.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B4D8

Deuteranopia (green-blind)

#91A4D6

Tritanopia (blue-blind)

#00C3C2

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #40b9d6;
/* rgb */ color: rgb(64, 185, 214);
/* oklch */ color: oklch(73.1% 0.112 217.1);

Tailwind

colors: {
  custom: {
    50: '#88cee2',
    500: '#40b9d6',
    950: '#000000',
  },
}

SCSS

$custom: #40b9d6;
$custom-light: #88cee2;
$custom-dark: #000000;

JSON

{
  "hex": "#40b9d6",
  "rgb": {
    "r": 64,
    "g": 185,
    "b": 214
  },
  "hsl": {
    "h": 191.6,
    "s": 64.655,
    "l": 54.51
  },
  "oklch": {
    "l": 0.73113,
    "c": 0.11217,
    "h": 217.1
  },
  "luminance": 0.40643
}

Semantic roles & 50–950 ramp

primary

#40B9D6

secondary

#D9A599

accent

#6140E8

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B9D6

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

Preview Lab → · Contrast checker → · Palette generator →