#40A3D0#40A3D0

#40A3D0 is a light, moderate cyan. Relative luminance 0.318; OKLCH L 67.7% C 0.112 H 231.6°. Best body text is #000000 at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#40A3D0
RGB	rgb(64, 163, 208)
HSL	hsl(199, 61%, 53%)
HSV	hsv(199, 69%, 82%)
CMYK	cmyk(69.2%, 21.6%, 0%, 18.4%)
CIE-LAB	lab(63.21, -14.39, -31.32)
CIE-LCH	lch(63.21, 34.47, 245.33°)
OKLab	oklab(67.66% -0.0698 -0.0879)
OKLCH	oklch(67.66% 0.112 231.6)
XYZ	xyz(26.5922, 31.8355, 64.4057)
Luminance	0.3184 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A3D0 #D06D40

analogous

#40D0B5 #40A3D0 #405BD0

triadic

#40A3D0 #D040A3 #A3D040

tetradic

#40A3D0 #B540D0 #D06D40 #5BD040

square

#40A3D0 #B540D0 #D06D40 #5BD040

split-complementary

#40A3D0 #D0405B #D0B540

monochromatic

#1E5C78 #2A81A9 #40A3D0 #71BBDC #A2D2E8

Accessibility & contrast

On white

2.85

#40A3D0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.37

#40A3D0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A3D0

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A3D0	#FFFFFF	#000000	##000000
##40A3D0	1.00	2.85	7.37	7.37
#FFFFFF	2.85	1.00	21.00	21.00
#000000	7.37	21.00	1.00	1.00
##000000	7.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8CA1D2

Deuteranopia (green-blind)

#7993CF

Tritanopia (blue-blind)

#00AFB2

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #40a3d0;
/* rgb */ color: rgb(64, 163, 208);
/* oklch */ color: oklch(67.7% 0.112 231.6);

Tailwind

colors: {
  custom: {
    50: '#86bede',
    500: '#40a3d0',
    950: '#000000',
  },
}

SCSS

$custom: #40a3d0;
$custom-light: #86bede;
$custom-dark: #000000;

JSON

{
  "hex": "#40a3d0",
  "rgb": {
    "r": 64,
    "g": 163,
    "b": 208
  },
  "hsl": {
    "h": 198.75,
    "s": 60.504,
    "l": 53.333
  },
  "oklch": {
    "l": 0.6766,
    "c": 0.11223,
    "h": 231.6
  },
  "luminance": 0.31838
}

Semantic roles & 50–950 ramp

primary

#40A3D0

secondary

#D5AA97

accent

#7644E4

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1215

muted

#7D8183

Preview Lab

Preview with #40A3D0

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

Preview Lab → · Contrast checker → · Palette generator →