#40B9D7#40B9D7

#40B9D7 is a light, moderate cyan. Relative luminance 0.407; OKLCH L 73.2% C 0.113 H 217.8°. Best body text is #000000 at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#40B9D7
RGB	rgb(64, 185, 215)
HSL	hsl(192, 65%, 55%)
HSV	hsv(192, 70%, 84%)
CMYK	cmyk(70.2%, 14%, 0%, 15.7%)
CIE-LAB	lab(69.96, -23.68, -24.79)
CIE-LCH	lch(69.96, 34.28, 226.31°)
OKLab	oklab(73.15% -0.089 -0.0691)
OKLCH	oklch(73.15% 0.113 217.8)
XYZ	xyz(31.7239, 40.6906, 70.4589)
Luminance	0.4069 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B9D7 #D75E40

analogous

#40D7AA #40B9D7 #406DD7

triadic

#40B9D7 #D740B9 #B9D740

tetradic

#40B9D7 #AA40D7 #D75E40 #6DD740

square

#40B9D7 #AA40D7 #D75E40 #6DD740

split-complementary

#40B9D7 #D7406D #D7AA40

monochromatic

#1B6D81 #2698B4 #40B9D7 #73CCE2 #A5DEEC

Accessibility & contrast

On white

2.30

#40B9D7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.14

#40B9D7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B9D7

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B9D7	#FFFFFF	#000000	##000000
##40B9D7	1.00	2.30	9.14	9.14
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.14	21.00	1.00	1.00
##000000	9.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B4D9

Deuteranopia (green-blind)

#91A4D7

Tritanopia (blue-blind)

#00C3C2

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #40b9d7;
/* rgb */ color: rgb(64, 185, 215);
/* oklch */ color: oklch(73.2% 0.113 217.8);

Tailwind

colors: {
  custom: {
    50: '#88cee3',
    500: '#40b9d7',
    950: '#000000',
  },
}

SCSS

$custom: #40b9d7;
$custom-light: #88cee3;
$custom-dark: #000000;

JSON

{
  "hex": "#40b9d7",
  "rgb": {
    "r": 64,
    "g": 185,
    "b": 215
  },
  "hsl": {
    "h": 191.921,
    "s": 65.368,
    "l": 54.706
  },
  "oklch": {
    "l": 0.73154,
    "c": 0.11271,
    "h": 217.8
  },
  "luminance": 0.40694
}

Semantic roles & 50–950 ramp

primary

#40B9D7

secondary

#D9A69A

accent

#613FE8

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B9D7

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

Preview Lab → · Contrast checker → · Palette generator →