#40BFDF#40BFDF

#40BFDF is a light, moderate cyan. Relative luminance 0.437; OKLCH L 74.9% C 0.117 H 218.3°. Best body text is #000000 at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#40BFDF
RGB	rgb(64, 191, 223)
HSL	hsl(192, 71%, 56%)
HSV	hsv(192, 71%, 87%)
CMYK	cmyk(71.3%, 14.3%, 0%, 12.5%)
CIE-LAB	lab(72.01, -24.22, -26.00)
CIE-LCH	lch(72.01, 35.53, 227.04°)
OKLab	oklab(74.9% -0.0918 -0.0726)
OKLCH	oklch(74.9% 0.117 218.3)
XYZ	xyz(34.0589, 43.6753, 76.4329)
Luminance	0.4368 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40BFDF #DF6040

analogous

#40DFAF #40BFDF #4070DF

triadic

#40BFDF #DF40BF #BFDF40

tetradic

#40BFDF #AF40DF #DF6040 #70DF40

square

#40BFDF #AF40DF #DF6040 #70DF40

split-complementary

#40BFDF #DF4070 #DFAF40

monochromatic

#18758D #20A1C1 #40BFDF #74D1E8 #A9E2F1

Accessibility & contrast

On white

2.16

#40BFDF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.74

#40BFDF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40BFDF

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40BFDF	#FFFFFF	#000000	##000000
##40BFDF	1.00	2.16	9.74	9.74
#FFFFFF	2.16	1.00	21.00	21.00
#000000	9.74	21.00	1.00	1.00
##000000	9.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ABBAE1

Deuteranopia (green-blind)

#95AADF

Tritanopia (blue-blind)

#00CAC9

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #40bfdf;
/* rgb */ color: rgb(64, 191, 223);
/* oklch */ color: oklch(74.9% 0.117 218.3);

Tailwind

colors: {
  custom: {
    50: '#8ad2e9',
    500: '#40bfdf',
    950: '#000000',
  },
}

SCSS

$custom: #40bfdf;
$custom-light: #8ad2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#40bfdf",
  "rgb": {
    "r": 64,
    "g": 191,
    "b": 223
  },
  "hsl": {
    "h": 192.075,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.74899,
    "c": 0.11704,
    "h": 218.3
  },
  "luminance": 0.43679
}

Semantic roles & 50–950 ramp

primary

#40BFDF

secondary

#DEAA9D

accent

#5E3AEE

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1416

muted

#7E8284

Preview Lab

Preview with #40BFDF

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

Preview Lab → · Contrast checker → · Palette generator →