#40B6DB#40B6DB

#40B6DB is a light, moderate cyan. Relative luminance 0.397; OKLCH L 72.6% C 0.115 H 222.9°. Best body text is #000000 at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#40B6DB
RGB	rgb(64, 182, 219)
HSL	hsl(194, 68%, 55%)
HSV	hsv(194, 71%, 86%)
CMYK	cmyk(70.8%, 16.9%, 0%, 14.1%)
CIE-LAB	lab(69.22, -20.88, -28.10)
CIE-LCH	lch(69.22, 35.01, 233.38°)
OKLab	oklab(72.61% -0.0846 -0.0786)
OKLCH	oklch(72.61% 0.115 222.9)
XYZ	xyz(31.6232, 39.6567, 72.9920)
Luminance	0.3966 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B6DB #DB6540

analogous

#40DBB3 #40B6DB #4068DB

triadic

#40B6DB #DB40B6 #B6DB40

tetradic

#40B6DB #B340DB #DB6540 #68DB40

square

#40B6DB #B340DB #DB6540 #68DB40

split-complementary

#40B6DB #DB4068 #DBB340

monochromatic

#196D87 #2396BB #40B6DB #73CAE5 #A7DDEE

Accessibility & contrast

On white

2.35

#40B6DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.93

#40B6DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B6DB

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B6DB	#FFFFFF	#000000	##000000
##40B6DB	1.00	2.35	8.93	8.93
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.93	21.00	1.00	1.00
##000000	8.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B2DD

Deuteranopia (green-blind)

#8BA2DB

Tritanopia (blue-blind)

#00C1C2

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #40b6db;
/* rgb */ color: rgb(64, 182, 219);
/* oklch */ color: oklch(72.6% 0.115 222.9);

Tailwind

colors: {
  custom: {
    50: '#88cce6',
    500: '#40b6db',
    950: '#000000',
  },
}

SCSS

$custom: #40b6db;
$custom-light: #88cce6;
$custom-dark: #000000;

JSON

{
  "hex": "#40b6db",
  "rgb": {
    "r": 64,
    "g": 182,
    "b": 219
  },
  "hsl": {
    "h": 194.323,
    "s": 68.282,
    "l": 55.49
  },
  "oklch": {
    "l": 0.72614,
    "c": 0.11543,
    "h": 222.9
  },
  "luminance": 0.3966
}

Semantic roles & 50–950 ramp

primary

#40B6DB

secondary

#DCAB9B

accent

#663DEB

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #40B6DB

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

Preview Lab → · Contrast checker → · Palette generator →