#40B4D0#40B4D0

#40B4D0 is a light, moderate cyan. Relative luminance 0.383; OKLCH L 71.7% C 0.109 H 217.2°. Best body text is #000000 at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#40B4D0
RGB	rgb(64, 180, 208)
HSL	hsl(192, 61%, 53%)
HSV	hsv(192, 69%, 82%)
CMYK	cmyk(69.2%, 13.5%, 0%, 18.4%)
CIE-LAB	lab(68.23, -23.32, -23.59)
CIE-LCH	lch(68.23, 33.17, 225.33°)
OKLab	oklab(71.68% -0.0868 -0.0658)
OKLCH	oklch(71.68% 0.109 217.2)
XYZ	xyz(29.8160, 38.2832, 65.4803)
Luminance	0.3829 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B4D0 #D05C40

analogous

#40D0A4 #40B4D0 #406CD0

triadic

#40B4D0 #D040B4 #B4D040

tetradic

#40B4D0 #A440D0 #D05C40 #6CD040

square

#40B4D0 #A440D0 #D05C40 #6CD040

split-complementary

#40B4D0 #D0406C #D0A440

monochromatic

#1E6678 #2A90A9 #40B4D0 #71C7DC #A2DBE8

Accessibility & contrast

On white

2.43

#40B4D0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.66

#40B4D0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B4D0

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B4D0	#FFFFFF	#000000	##000000
##40B4D0	1.00	2.43	8.66	8.66
#FFFFFF	2.43	1.00	21.00	21.00
#000000	8.66	21.00	1.00	1.00
##000000	8.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2AFD2

Deuteranopia (green-blind)

#8DA0D0

Tritanopia (blue-blind)

#00BEBD

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #40b4d0;
/* rgb */ color: rgb(64, 180, 208);
/* oklch */ color: oklch(71.7% 0.109 217.2);

Tailwind

colors: {
  custom: {
    50: '#87cade',
    500: '#40b4d0',
    950: '#000000',
  },
}

SCSS

$custom: #40b4d0;
$custom-light: #87cade;
$custom-dark: #000000;

JSON

{
  "hex": "#40b4d0",
  "rgb": {
    "r": 64,
    "g": 180,
    "b": 208
  },
  "hsl": {
    "h": 191.667,
    "s": 60.504,
    "l": 53.333
  },
  "oklch": {
    "l": 0.71681,
    "c": 0.10888,
    "h": 217.2
  },
  "luminance": 0.38287
}

Semantic roles & 50–950 ramp

primary

#40B4D0

secondary

#D5A397

accent

#6344E4

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B4D0

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

Preview Lab → · Contrast checker → · Palette generator →