#40B8D7#40B8D7

#40B8D7 is a light, moderate cyan. Relative luminance 0.403; OKLCH L 72.9% C 0.113 H 218.7°. Best body text is #000000 at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#40B8D7
RGB	rgb(64, 184, 215)
HSL	hsl(192, 65%, 55%)
HSV	hsv(192, 70%, 84%)
CMYK	cmyk(70.2%, 14.4%, 0%, 15.7%)
CIE-LAB	lab(69.66, -23.17, -25.24)
CIE-LCH	lch(69.66, 34.26, 227.44°)
OKLab	oklab(72.92% -0.088 -0.0704)
OKLCH	oklch(72.92% 0.113 218.7)
XYZ	xyz(31.5155, 40.2736, 70.3894)
Luminance	0.4028 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B8D7 #D75F40

analogous

#40D7AB #40B8D7 #406DD7

triadic

#40B8D7 #D740B8 #B8D740

tetradic

#40B8D7 #AB40D7 #D75F40 #6DD740

square

#40B8D7 #AB40D7 #D75F40 #6DD740

split-complementary

#40B8D7 #D7406D #D7AB40

monochromatic

#1B6C81 #2697B4 #40B8D7 #73CBE2 #A5DEEC

Accessibility & contrast

On white

2.32

#40B8D7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.06

#40B8D7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B8D7

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B8D7	#FFFFFF	#000000	##000000
##40B8D7	1.00	2.32	9.06	9.06
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.06	21.00	1.00	1.00
##000000	9.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B3D9

Deuteranopia (green-blind)

#8FA4D7

Tritanopia (blue-blind)

#00C2C2

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #40b8d7;
/* rgb */ color: rgb(64, 184, 215);
/* oklch */ color: oklch(72.9% 0.113 218.7);

Tailwind

colors: {
  custom: {
    50: '#88cde3',
    500: '#40b8d7',
    950: '#000000',
  },
}

SCSS

$custom: #40b8d7;
$custom-light: #88cde3;
$custom-dark: #000000;

JSON

{
  "hex": "#40b8d7",
  "rgb": {
    "r": 64,
    "g": 184,
    "b": 215
  },
  "hsl": {
    "h": 192.318,
    "s": 65.368,
    "l": 54.706
  },
  "oklch": {
    "l": 0.72918,
    "c": 0.11274,
    "h": 218.7
  },
  "luminance": 0.40277
}

Semantic roles & 50–950 ramp

primary

#40B8D7

secondary

#D9A79A

accent

#623FE8

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B8D7

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

Preview Lab → · Contrast checker → · Palette generator →