#40B3DB#40B3DB

#40B3DB is a light, moderate cyan. Relative luminance 0.384; OKLCH L 71.9% C 0.116 H 225.3°. Best body text is #000000 at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#40B3DB
RGB	rgb(64, 179, 219)
HSL	hsl(195, 68%, 55%)
HSV	hsv(195, 71%, 86%)
CMYK	cmyk(70.8%, 18.3%, 0%, 14.1%)
CIE-LAB	lab(68.34, -19.32, -29.46)
CIE-LCH	lch(68.34, 35.23, 236.73°)
OKLab	oklab(71.91% -0.0816 -0.0825)
OKLCH	oklch(71.91% 0.116 225.3)
XYZ	xyz(31.0154, 38.4411, 72.7894)
Luminance	0.3845 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B3DB #DB6840

analogous

#40DBB6 #40B3DB #4065DB

triadic

#40B3DB #DB40B3 #B3DB40

tetradic

#40B3DB #B640DB #DB6840 #65DB40

square

#40B3DB #B640DB #DB6840 #65DB40

split-complementary

#40B3DB #DB4065 #DBB640

monochromatic

#196B87 #2394BB #40B3DB #73C7E5 #A7DCEE

Accessibility & contrast

On white

2.42

#40B3DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.69

#40B3DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B3DB

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B3DB	#FFFFFF	#000000	##000000
##40B3DB	1.00	2.42	8.69	8.69
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.69	21.00	1.00	1.00
##000000	8.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DAFDD

Deuteranopia (green-blind)

#88A0DB

Tritanopia (blue-blind)

#00BFC0

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #40b3db;
/* rgb */ color: rgb(64, 179, 219);
/* oklch */ color: oklch(71.9% 0.116 225.3);

Tailwind

colors: {
  custom: {
    50: '#88c9e6',
    500: '#40b3db',
    950: '#000000',
  },
}

SCSS

$custom: #40b3db;
$custom-light: #88c9e6;
$custom-dark: #000000;

JSON

{
  "hex": "#40b3db",
  "rgb": {
    "r": 64,
    "g": 179,
    "b": 219
  },
  "hsl": {
    "h": 195.484,
    "s": 68.282,
    "l": 55.49
  },
  "oklch": {
    "l": 0.71909,
    "c": 0.11602,
    "h": 225.3
  },
  "luminance": 0.38445
}

Semantic roles & 50–950 ramp

primary

#40B3DB

secondary

#DCAC9B

accent

#6A3DEB

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #40B3DB

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

Preview Lab → · Contrast checker → · Palette generator →