#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
RGB	rgb(64, 163, 213)
HSL	hsl(200, 64%, 54%)
HSV	hsv(200, 70%, 84%)
CMYK	cmyk(70%, 23.5%, 0%, 16.5%)
CIE-LAB	lab(63.41, -12.74, -33.78)
CIE-LCH	lch(63.41, 36.10, 249.34°)
OKLab	oklab(67.89% -0.068 -0.095)
OKLCH	oklch(67.89% 0.117 234.4)
XYZ	xyz(27.2170, 32.0854, 67.6966)
Luminance	0.3209 (WCAG relative)
Temperature	cool
Family	cyan

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
##40A3D5	1.00	2.83	7.42	7.42
#FFFFFF	2.83	1.00	21.00	21.00
#000000	7.42	21.00	1.00	1.00
##000000	7.42	21.00	1.00	1.00

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 →