#40B5D5#40B5D5

#40B5D5 is a light, moderate cyan. Relative luminance 0.389; OKLCH L 72.1% C 0.112 H 219.8°. Best body text is #000000 at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#40B5D5
RGB	rgb(64, 181, 213)
HSL	hsl(193, 64%, 54%)
HSV	hsv(193, 70%, 84%)
CMYK	cmyk(70%, 15%, 0%, 16.5%)
CIE-LAB	lab(68.71, -22.27, -25.61)
CIE-LCH	lch(68.71, 33.93, 228.99°)
OKLab	oklab(72.13% -0.0858 -0.0715)
OKLCH	oklch(72.13% 0.112 219.8)
XYZ	xyz(30.6435, 38.9383, 68.8387)
Luminance	0.3894 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B5D5 #D56040

analogous

#40D5AB #40B5D5 #406BD5

triadic

#40B5D5 #D540B5 #B5D540

tetradic

#40B5D5 #AB40D5 #D56040 #6BD540

square

#40B5D5 #AB40D5 #D56040 #6BD540

split-complementary

#40B5D5 #D5406B #D5AB40

monochromatic

#1C6A7F #2793B1 #40B5D5 #72C8E0 #A4DCEB

Accessibility & contrast

On white

2.39

#40B5D5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.79

#40B5D5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B5D5

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B5D5	#FFFFFF	#000000	##000000
##40B5D5	1.00	2.39	8.79	8.79
#FFFFFF	2.39	1.00	21.00	21.00
#000000	8.79	21.00	1.00	1.00
##000000	8.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B0D7

Deuteranopia (green-blind)

#8DA1D5

Tritanopia (blue-blind)

#00C0BF

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #40b5d5;
/* rgb */ color: rgb(64, 181, 213);
/* oklch */ color: oklch(72.1% 0.112 219.8);

Tailwind

colors: {
  custom: {
    50: '#88cbe2',
    500: '#40b5d5',
    950: '#000000',
  },
}

SCSS

$custom: #40b5d5;
$custom-light: #88cbe2;
$custom-dark: #000000;

JSON

{
  "hex": "#40b5d5",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 213
  },
  "hsl": {
    "h": 192.886,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.72125,
    "c": 0.1117,
    "h": 219.8
  },
  "luminance": 0.38942
}

Semantic roles & 50–950 ramp

primary

#40B5D5

secondary

#D8A699

accent

#6541E7

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B5D5

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

Preview Lab → · Contrast checker → · Palette generator →