#40B8D5#40B8D5

#40B8D5 is a light, moderate cyan. Relative luminance 0.402; OKLCH L 72.8% C 0.112 H 217.3°. Best body text is #000000 at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#40B8D5
RGB	rgb(64, 184, 213)
HSL	hsl(192, 64%, 54%)
HSV	hsv(192, 70%, 84%)
CMYK	cmyk(70%, 13.6%, 0%, 16.5%)
CIE-LAB	lab(69.59, -23.80, -24.25)
CIE-LCH	lch(69.59, 33.98, 225.55°)
OKLab	oklab(72.84% -0.0888 -0.0676)
OKLCH	oklch(72.84% 0.112 217.3)
XYZ	xyz(31.2601, 40.1715, 69.0443)
Luminance	0.4017 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B8D5 #D55D40

analogous

#40D5A8 #40B8D5 #406ED5

triadic

#40B8D5 #D540B8 #B8D540

tetradic

#40B8D5 #A840D5 #D55D40 #6ED540

square

#40B8D5 #A840D5 #D55D40 #6ED540

split-complementary

#40B8D5 #D5406E #D5A840

monochromatic

#1C6B7F #2796B1 #40B8D5 #72CBE0 #A4DDEB

Accessibility & contrast

On white

2.32

#40B8D5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.03

#40B8D5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B8D5

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B8D5	#FFFFFF	#000000	##000000
##40B8D5	1.00	2.32	9.03	9.03
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.03	21.00	1.00	1.00
##000000	9.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5B3D7

Deuteranopia (green-blind)

#90A3D5

Tritanopia (blue-blind)

#00C2C1

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #40b8d5;
/* rgb */ color: rgb(64, 184, 213);
/* oklch */ color: oklch(72.8% 0.112 217.3);

Tailwind

colors: {
  custom: {
    50: '#88cde2',
    500: '#40b8d5',
    950: '#000000',
  },
}

SCSS

$custom: #40b8d5;
$custom-light: #88cde2;
$custom-dark: #000000;

JSON

{
  "hex": "#40b8d5",
  "rgb": {
    "r": 64,
    "g": 184,
    "b": 213
  },
  "hsl": {
    "h": 191.678,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.72835,
    "c": 0.11162,
    "h": 217.3
  },
  "luminance": 0.40175
}

Semantic roles & 50–950 ramp

primary

#40B8D5

secondary

#D8A599

accent

#6141E7

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B8D5

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

Preview Lab → · Contrast checker → · Palette generator →