#40A9D3#40A9D3

#40A9D3 is a light, moderate cyan. Relative luminance 0.342; OKLCH L 69.2% C 0.113 H 228.4°. Best body text is #000000 at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#40A9D3
RGB	rgb(64, 169, 211)
HSL	hsl(197, 63%, 54%)
HSV	hsv(197, 70%, 83%)
CMYK	cmyk(69.7%, 19.9%, 0%, 17.3%)
CIE-LAB	lab(65.09, -16.63, -30.07)
CIE-LCH	lch(65.09, 34.36, 241.05°)
OKLab	oklab(69.21% -0.0747 -0.0843)
OKLCH	oklch(69.21% 0.113 228.4)
XYZ	xyz(28.0555, 34.1659, 66.7315)
Luminance	0.3417 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A9D3 #D36A40

analogous

#40D3B4 #40A9D3 #4060D3

triadic

#40A9D3 #D340A9 #A9D340

tetradic

#40A9D3 #B440D3 #D36A40 #60D340

square

#40A9D3 #B440D3 #D36A40 #60D340

split-complementary

#40A9D3 #D34060 #D3B440

monochromatic

#1D617C #2888AE #40A9D3 #72BFDE #A3D6EA

Accessibility & contrast

On white

2.68

#40A9D3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.83

#40A9D3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A9D3

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A9D3	#FFFFFF	#000000	##000000
##40A9D3	1.00	2.68	7.83	7.83
#FFFFFF	2.68	1.00	21.00	21.00
#000000	7.83	21.00	1.00	1.00
##000000	7.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93A6D5

Deuteranopia (green-blind)

#7F98D2

Tritanopia (blue-blind)

#00B5B7

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #40a9d3;
/* rgb */ color: rgb(64, 169, 211);
/* oklch */ color: oklch(69.2% 0.113 228.4);

Tailwind

colors: {
  custom: {
    50: '#86c2e0',
    500: '#40a9d3',
    950: '#000000',
  },
}

SCSS

$custom: #40a9d3;
$custom-light: #86c2e0;
$custom-dark: #000000;

JSON

{
  "hex": "#40a9d3",
  "rgb": {
    "r": 64,
    "g": 169,
    "b": 211
  },
  "hsl": {
    "h": 197.143,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.69207,
    "c": 0.1126,
    "h": 228.4
  },
  "luminance": 0.34169
}

Semantic roles & 50–950 ramp

primary

#40A9D3

secondary

#D7AA98

accent

#7142E6

background

#F8FBFD

surface

#F0F7FB

border

#CBD0D4

text

#0D1215

muted

#7D8183

Preview Lab

Preview with #40A9D3

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

Preview Lab → · Contrast checker → · Palette generator →