#40A3D3#40A3D3

#40A3D3 is a light, moderate cyan. Relative luminance 0.320; OKLCH L 67.8% C 0.115 H 233.3°. Best body text is #000000 at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#40A3D3
RGB	rgb(64, 163, 211)
HSL	hsl(200, 63%, 54%)
HSV	hsv(200, 70%, 83%)
CMYK	cmyk(69.7%, 22.7%, 0%, 17.3%)
CIE-LAB	lab(63.33, -13.40, -32.80)
CIE-LCH	lch(63.33, 35.43, 247.78°)
OKLab	oklab(67.8% -0.0687 -0.0921)
OKLCH	oklch(67.8% 0.115 233.3)
XYZ	xyz(26.9648, 31.9845, 66.3679)
Luminance	0.3199 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A3D3 #D37040

analogous

#40D3BA #40A3D3 #405AD3

triadic

#40A3D3 #D340A3 #A3D340

tetradic

#40A3D3 #BA40D3 #D37040 #5AD340

square

#40A3D3 #BA40D3 #D37040 #5AD340

split-complementary

#40A3D3 #D3405A #D3BA40

monochromatic

#1D5D7C #2882AE #40A3D3 #72BBDE #A3D3EA

Accessibility & contrast

On white

2.84

#40A3D3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.40

#40A3D3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A3D3

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A3D3	#FFFFFF	#000000	##000000
##40A3D3	1.00	2.84	7.40	7.40
#FFFFFF	2.84	1.00	21.00	21.00
#000000	7.40	21.00	1.00	1.00
##000000	7.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8BA1D5

Deuteranopia (green-blind)

#7793D2

Tritanopia (blue-blind)

#00B0B3

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #40a3d3;
/* rgb */ color: rgb(64, 163, 211);
/* oklch */ color: oklch(67.8% 0.115 233.3);

Tailwind

colors: {
  custom: {
    50: '#86bee0',
    500: '#40a3d3',
    950: '#000000',
  },
}

SCSS

$custom: #40a3d3;
$custom-light: #86bee0;
$custom-dark: #000000;

JSON

{
  "hex": "#40a3d3",
  "rgb": {
    "r": 64,
    "g": 163,
    "b": 211
  },
  "hsl": {
    "h": 199.592,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.67799,
    "c": 0.11496,
    "h": 233.3
  },
  "luminance": 0.31988
}

Semantic roles & 50–950 ramp

primary

#40A3D3

secondary

#D7AD98

accent

#7842E6

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #40A3D3

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

Preview Lab → · Contrast checker → · Palette generator →