#40B1D1#40B1D1

#40B1D1 is a light, moderate cyan. Relative luminance 0.371; OKLCH L 71.0% C 0.110 H 220.4°. Best body text is #000000 at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#40B1D1
RGB	rgb(64, 177, 209)
HSL	hsl(193, 61%, 54%)
HSV	hsv(193, 69%, 82%)
CMYK	cmyk(69.4%, 15.3%, 0%, 18%)
CIE-LAB	lab(67.38, -21.47, -25.45)
CIE-LCH	lch(67.38, 33.29, 229.85°)
OKLab	oklab(71.01% -0.0834 -0.071)
OKLCH	oklch(71.01% 0.11 220.4)
XYZ	xyz(29.3404, 37.1344, 65.9306)
Luminance	0.3714 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B1D1 #D16040

analogous

#40D1A8 #40B1D1 #4068D1

triadic

#40B1D1 #D140B1 #B1D140

tetradic

#40B1D1 #A840D1 #D16040 #68D140

square

#40B1D1 #A840D1 #D16040 #68D140

split-complementary

#40B1D1 #D14068 #D1A840

monochromatic

#1D6579 #298EAB #40B1D1 #71C5DD #A3D9E9

Accessibility & contrast

On white

2.49

#40B1D1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.43

#40B1D1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B1D1

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B1D1	#FFFFFF	#000000	##000000
##40B1D1	1.00	2.49	8.43	8.43
#FFFFFF	2.49	1.00	21.00	21.00
#000000	8.43	21.00	1.00	1.00
##000000	8.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EACD3

Deuteranopia (green-blind)

#899ED1

Tritanopia (blue-blind)

#00BBBB

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #40b1d1;
/* rgb */ color: rgb(64, 177, 209);
/* oklch */ color: oklch(71.0% 0.110 220.4);

Tailwind

colors: {
  custom: {
    50: '#87c8df',
    500: '#40b1d1',
    950: '#000000',
  },
}

SCSS

$custom: #40b1d1;
$custom-light: #87c8df;
$custom-dark: #000000;

JSON

{
  "hex": "#40b1d1",
  "rgb": {
    "r": 64,
    "g": 177,
    "b": 209
  },
  "hsl": {
    "h": 193.241,
    "s": 61.181,
    "l": 53.529
  },
  "oklch": {
    "l": 0.71009,
    "c": 0.10955,
    "h": 220.4
  },
  "luminance": 0.37138
}

Semantic roles & 50–950 ramp

primary

#40B1D1

secondary

#D5A597

accent

#6744E4

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B1D1

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

Preview Lab → · Contrast checker → · Palette generator →