#40B3D0#40B3D0

#40B3D0 is a light, moderate cyan. Relative luminance 0.379; OKLCH L 71.4% C 0.109 H 218.0°. Best body text is #000000 at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#40B3D0
RGB	rgb(64, 179, 208)
HSL	hsl(192, 61%, 53%)
HSV	hsv(192, 69%, 82%)
CMYK	cmyk(69.2%, 13.9%, 0%, 18.4%)
CIE-LAB	lab(67.93, -22.81, -24.05)
CIE-LCH	lch(67.93, 33.14, 226.51°)
OKLab	oklab(71.44% -0.0858 -0.067)
OKLCH	oklch(71.44% 0.109 218)
XYZ	xyz(29.6149, 37.8809, 65.4132)
Luminance	0.3788 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B3D0 #D05D40

analogous

#40D0A5 #40B3D0 #406BD0

triadic

#40B3D0 #D040B3 #B3D040

tetradic

#40B3D0 #A540D0 #D05D40 #6BD040

square

#40B3D0 #A540D0 #D05D40 #6BD040

split-complementary

#40B3D0 #D0406B #D0A540

monochromatic

#1E6678 #2A8FA9 #40B3D0 #71C7DC #A2DAE8

Accessibility & contrast

On white

2.45

#40B3D0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.58

#40B3D0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B3D0

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B3D0	#FFFFFF	#000000	##000000
##40B3D0	1.00	2.45	8.58	8.58
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.58	21.00	1.00	1.00
##000000	8.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0AED2

Deuteranopia (green-blind)

#8C9FD0

Tritanopia (blue-blind)

#00BDBC

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #40b3d0;
/* rgb */ color: rgb(64, 179, 208);
/* oklch */ color: oklch(71.4% 0.109 218.0);

Tailwind

colors: {
  custom: {
    50: '#87cade',
    500: '#40b3d0',
    950: '#000000',
  },
}

SCSS

$custom: #40b3d0;
$custom-light: #87cade;
$custom-dark: #000000;

JSON

{
  "hex": "#40b3d0",
  "rgb": {
    "r": 64,
    "g": 179,
    "b": 208
  },
  "hsl": {
    "h": 192.083,
    "s": 60.504,
    "l": 53.333
  },
  "oklch": {
    "l": 0.71443,
    "c": 0.10888,
    "h": 218
  },
  "luminance": 0.37884
}

Semantic roles & 50–950 ramp

primary

#40B3D0

secondary

#D5A397

accent

#6444E4

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B3D0

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

Preview Lab → · Contrast checker → · Palette generator →