#40B4D1#40B4D1

#40B4D1 is a light, moderate cyan. Relative luminance 0.383; OKLCH L 71.7% C 0.109 H 217.9°. Best body text is #000000 at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#40B4D1
RGB	rgb(64, 180, 209)
HSL	hsl(192, 61%, 54%)
HSV	hsv(192, 69%, 82%)
CMYK	cmyk(69.4%, 13.9%, 0%, 18%)
CIE-LAB	lab(68.27, -23.01, -24.09)
CIE-LCH	lch(68.27, 33.31, 226.31°)
OKLab	oklab(71.72% -0.0864 -0.0672)
OKLCH	oklch(71.72% 0.109 217.9)
XYZ	xyz(29.9394, 38.3326, 66.1303)
Luminance	0.3834 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B4D1 #D15D40

analogous

#40D1A5 #40B4D1 #406BD1

triadic

#40B4D1 #D140B4 #B4D140

tetradic

#40B4D1 #A540D1 #D15D40 #6BD140

square

#40B4D1 #A540D1 #D15D40 #6BD140

split-complementary

#40B4D1 #D1406B #D1A540

monochromatic

#1D6779 #2991AB #40B4D1 #71C7DD #A3DBE9

Accessibility & contrast

On white

2.42

#40B4D1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.67

#40B4D1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B4D1

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B4D1	#FFFFFF	#000000	##000000
##40B4D1	1.00	2.42	8.67	8.67
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.67	21.00	1.00	1.00
##000000	8.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1AFD3

Deuteranopia (green-blind)

#8DA0D1

Tritanopia (blue-blind)

#00BEBD

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #40b4d1;
/* rgb */ color: rgb(64, 180, 209);
/* oklch */ color: oklch(71.7% 0.109 217.9);

Tailwind

colors: {
  custom: {
    50: '#87cadf',
    500: '#40b4d1',
    950: '#000000',
  },
}

SCSS

$custom: #40b4d1;
$custom-light: #87cadf;
$custom-dark: #000000;

JSON

{
  "hex": "#40b4d1",
  "rgb": {
    "r": 64,
    "g": 180,
    "b": 209
  },
  "hsl": {
    "h": 192,
    "s": 61.181,
    "l": 53.529
  },
  "oklch": {
    "l": 0.71722,
    "c": 0.10943,
    "h": 217.9
  },
  "luminance": 0.38336
}

Semantic roles & 50–950 ramp

primary

#40B4D1

secondary

#D5A497

accent

#6444E4

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B4D1

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

Preview Lab → · Contrast checker → · Palette generator →