#40A3D5#40A3D5

#40A3D5 is a light, moderate cyan. Relative luminance 0.321; OKLCH L 67.9% C 0.117 H 234.4°. Best body text is #000000 at 7.42:1 contrast (WCAG AA passes).

Color values

HEX#40A3D5
RGBrgb(64, 163, 213)
HSLhsl(200, 64%, 54%)
HSVhsv(200, 70%, 84%)
CMYKcmyk(70%, 23.5%, 0%, 16.5%)
CIE-LABlab(63.41, -12.74, -33.78)
CIE-LCHlch(63.41, 36.10, 249.34°)
OKLaboklab(67.89% -0.068 -0.095)
OKLCHoklch(67.89% 0.117 234.4)
XYZxyz(27.2170, 32.0854, 67.6966)
Luminance0.3209 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#40A3D5 #D57240
analogous
#40D5BC #40A3D5 #4059D5
triadic
#40A3D5 #D540A3 #A3D540
tetradic
#40A3D5 #BC40D5 #D57240 #59D540
square
#40A3D5 #BC40D5 #D57240 #59D540
split-complementary
#40A3D5 #D54059 #D5BC40
monochromatic
#1C5E7F #2783B1 #40A3D5 #72BBE0 #A4D3EB

Accessibility & contrast

On white

2.83
#40A3D5 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.42
#40A3D5 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A3D5
7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##40A3D5#FFFFFF#000000##000000
##40A3D51.002.837.427.42
#FFFFFF2.831.0021.0021.00
#0000007.4221.001.001.00
##0000007.4221.001.001.00

Color blindness preview

Protanopia (red-blind)
#8BA2D7
Deuteranopia (green-blind)
#7693D4
Tritanopia (blue-blind)
#00B0B4
Achromatopsia (no color)
#9A9A9A

Design tokens & code

CSS
--color: #40a3d5;
/* rgb */ color: rgb(64, 163, 213);
/* oklch */ color: oklch(67.9% 0.117 234.4);
Tailwind
colors: {
  custom: {
    50: '#86bee2',
    500: '#40a3d5',
    950: '#000000',
  },
}
SCSS
$custom: #40a3d5;
$custom-light: #86bee2;
$custom-dark: #000000;
JSON
{
  "hex": "#40a3d5",
  "rgb": {
    "r": 64,
    "g": 163,
    "b": 213
  },
  "hsl": {
    "h": 200.134,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.67893,
    "c": 0.11683,
    "h": 234.4
  },
  "luminance": 0.32088
}

Semantic roles & 50–950 ramp

primary
#40A3D5
secondary
#D8AE99
accent
#7941E7
background
#F8FBFD
surface
#F0F6FB
border
#CBD0D4
text
#0D1215
muted
#7D8183

Preview Lab

Preview with #40A3D5

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

Preview Lab → · Contrast checker → · Palette generator →

#40A3D5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva