#40B8D3#40B8D3

#40B8D3 is a light, moderate cyan. Relative luminance 0.401; OKLCH L 72.8% C 0.111 H 215.9°. Best body text is #000000 at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#40B8D3
RGB	rgb(64, 184, 211)
HSL	hsl(191, 63%, 54%)
HSV	hsv(191, 70%, 83%)
CMYK	cmyk(69.7%, 12.8%, 0%, 17.3%)
CIE-LAB	lab(69.52, -24.42, -23.27)
CIE-LCH	lch(69.52, 33.73, 223.62°)
OKLab	oklab(72.75% -0.0896 -0.0648)
OKLCH	oklch(72.75% 0.111 215.9)
XYZ	xyz(31.0078, 40.0706, 67.7156)
Luminance	0.4007 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B8D3 #D35B40

analogous

#40D3A4 #40B8D3 #406FD3

triadic

#40B8D3 #D340B8 #B8D340

tetradic

#40B8D3 #A440D3 #D35B40 #6FD340

square

#40B8D3 #A440D3 #D35B40 #6FD340

split-complementary

#40B8D3 #D3406F #D3A440

monochromatic

#1D6A7C #2895AE #40B8D3 #72CADE #A3DDEA

Accessibility & contrast

On white

2.33

#40B8D3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.01

#40B8D3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B8D3

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B8D3	#FFFFFF	#000000	##000000
##40B8D3	1.00	2.33	9.01	9.01
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.01	21.00	1.00	1.00
##000000	9.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B2D5

Deuteranopia (green-blind)

#91A3D3

Tritanopia (blue-blind)

#00C2C0

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #40b8d3;
/* rgb */ color: rgb(64, 184, 211);
/* oklch */ color: oklch(72.8% 0.111 215.9);

Tailwind

colors: {
  custom: {
    50: '#88cde0',
    500: '#40b8d3',
    950: '#000000',
  },
}

SCSS

$custom: #40b8d3;
$custom-light: #88cde0;
$custom-dark: #000000;

JSON

{
  "hex": "#40b8d3",
  "rgb": {
    "r": 64,
    "g": 184,
    "b": 211
  },
  "hsl": {
    "h": 191.02,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.72754,
    "c": 0.11059,
    "h": 215.9
  },
  "luminance": 0.40074
}

Semantic roles & 50–950 ramp

primary

#40B8D3

secondary

#D7A498

accent

#6042E6

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B8D3

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

Preview Lab → · Contrast checker → · Palette generator →