#40B6D9#40B6D9

#40B6D9 is a light, moderate cyan. Relative luminance 0.396; OKLCH L 72.5% C 0.114 H 221.6°. Best body text is #000000 at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#40B6D9
RGB	rgb(64, 182, 217)
HSL	hsl(194, 67%, 55%)
HSV	hsv(194, 71%, 85%)
CMYK	cmyk(70.5%, 16.1%, 0%, 14.9%)
CIE-LAB	lab(69.15, -21.52, -27.12)
CIE-LCH	lch(69.15, 34.62, 231.57°)
OKLab	oklab(72.53% -0.0853 -0.0758)
OKLCH	oklch(72.53% 0.114 221.6)
XYZ	xyz(31.3615, 39.5520, 71.6137)
Luminance	0.3956 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B6D9 #D96340

analogous

#40D9AF #40B6D9 #406AD9

triadic

#40B6D9 #D940B6 #B6D940

tetradic

#40B6D9 #AF40D9 #D96340 #6AD940

square

#40B6D9 #AF40D9 #D96340 #6AD940

split-complementary

#40B6D9 #D9406A #D9AF40

monochromatic

#1A6C84 #2496B7 #40B6D9 #73CAE3 #A6DDED

Accessibility & contrast

On white

2.36

#40B6D9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.91

#40B6D9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B6D9

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B6D9	#FFFFFF	#000000	##000000
##40B6D9	1.00	2.36	8.91	8.91
#FFFFFF	2.36	1.00	21.00	21.00
#000000	8.91	21.00	1.00	1.00
##000000	8.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B2DB

Deuteranopia (green-blind)

#8CA2D9

Tritanopia (blue-blind)

#00C1C1

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #40b6d9;
/* rgb */ color: rgb(64, 182, 217);
/* oklch */ color: oklch(72.5% 0.114 221.6);

Tailwind

colors: {
  custom: {
    50: '#88cce4',
    500: '#40b6d9',
    950: '#000000',
  },
}

SCSS

$custom: #40b6d9;
$custom-light: #88cce4;
$custom-dark: #000000;

JSON

{
  "hex": "#40b6d9",
  "rgb": {
    "r": 64,
    "g": 182,
    "b": 217
  },
  "hsl": {
    "h": 193.725,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.72529,
    "c": 0.11411,
    "h": 221.6
  },
  "luminance": 0.39556
}

Semantic roles & 50–950 ramp

primary

#40B6D9

secondary

#DAA99A

accent

#653EEA

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B6D9

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

Preview Lab → · Contrast checker → · Palette generator →