#40A3D8#40A3D8

#40A3D8 is a light, moderate cyan. Relative luminance 0.322; OKLCH L 68.0% C 0.120 H 236.0°. Best body text is #000000 at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#40A3D8
RGB	rgb(64, 163, 216)
HSL	hsl(201, 66%, 55%)
HSV	hsv(201, 70%, 85%)
CMYK	cmyk(70.4%, 24.5%, 0%, 15.3%)
CIE-LAB	lab(63.54, -11.74, -35.25)
CIE-LCH	lch(63.54, 37.15, 251.58°)
OKLab	oklab(68.04% -0.067 -0.0992)
OKLCH	oklch(68.04% 0.12 236)
XYZ	xyz(27.6013, 32.2391, 69.7205)
Luminance	0.3224 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A3D8 #D87540

analogous

#40D8C1 #40A3D8 #4057D8

triadic

#40A3D8 #D840A3 #A3D840

tetradic

#40A3D8 #C140D8 #D87540 #57D840

square

#40A3D8 #C140D8 #D87540 #57D840

split-complementary

#40A3D8 #D84057 #D8C140

monochromatic

#1B5F83 #2583B6 #40A3D8 #73BBE2 #A6D4ED

Accessibility & contrast

On white

2.82

#40A3D8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.45

#40A3D8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A3D8

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A3D8	#FFFFFF	#000000	##000000
##40A3D8	1.00	2.82	7.45	7.45
#FFFFFF	2.82	1.00	21.00	21.00
#000000	7.45	21.00	1.00	1.00
##000000	7.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8AA2DA

Deuteranopia (green-blind)

#7593D7

Tritanopia (blue-blind)

#00B1B5

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #40a3d8;
/* rgb */ color: rgb(64, 163, 216);
/* oklch */ color: oklch(68.0% 0.120 236.0);

Tailwind

colors: {
  custom: {
    50: '#87bee4',
    500: '#40a3d8',
    950: '#000000',
  },
}

SCSS

$custom: #40a3d8;
$custom-light: #87bee4;
$custom-dark: #000000;

JSON

{
  "hex": "#40a3d8",
  "rgb": {
    "r": 64,
    "g": 163,
    "b": 216
  },
  "hsl": {
    "h": 200.921,
    "s": 66.087,
    "l": 54.902
  },
  "oklch": {
    "l": 0.68036,
    "c": 0.11973,
    "h": 236
  },
  "luminance": 0.32242
}

Semantic roles & 50–950 ramp

primary

#40A3D8

secondary

#DAB09A

accent

#7A3FE9

background

#F9FBFD

surface

#F1F6FB

border

#CBD0D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #40A3D8

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

Preview Lab → · Contrast checker → · Palette generator →