#40B3D8#40B3D8

#40B3D8 is a light, moderate cyan. Relative luminance 0.383; OKLCH L 71.8% C 0.114 H 223.4°. Best body text is #000000 at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#40B3D8
RGB	rgb(64, 179, 216)
HSL	hsl(195, 66%, 55%)
HSV	hsv(195, 70%, 85%)
CMYK	cmyk(70.4%, 17.1%, 0%, 15.3%)
CIE-LAB	lab(68.23, -20.28, -27.99)
CIE-LCH	lch(68.23, 34.56, 234.07°)
OKLab	oklab(71.78% -0.0827 -0.0783)
OKLCH	oklch(71.78% 0.114 223.4)
XYZ	xyz(30.6240, 38.2846, 70.7281)
Luminance	0.3829 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B3D8 #D86540

analogous

#40D8B1 #40B3D8 #4067D8

triadic

#40B3D8 #D840B3 #B3D840

tetradic

#40B3D8 #B140D8 #D86540 #67D840

square

#40B3D8 #B140D8 #D86540 #67D840

split-complementary

#40B3D8 #D84067 #D8B140

monochromatic

#1B6A83 #2593B6 #40B3D8 #73C7E2 #A6DBED

Accessibility & contrast

On white

2.43

#40B3D8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.66

#40B3D8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B3D8

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B3D8	#FFFFFF	#000000	##000000
##40B3D8	1.00	2.43	8.66	8.66
#FFFFFF	2.43	1.00	21.00	21.00
#000000	8.66	21.00	1.00	1.00
##000000	8.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EAFDA

Deuteranopia (green-blind)

#89A0D8

Tritanopia (blue-blind)

#00BEBF

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #40b3d8;
/* rgb */ color: rgb(64, 179, 216);
/* oklch */ color: oklch(71.8% 0.114 223.4);

Tailwind

colors: {
  custom: {
    50: '#88cae4',
    500: '#40b3d8',
    950: '#000000',
  },
}

SCSS

$custom: #40b3d8;
$custom-light: #88cae4;
$custom-dark: #000000;

JSON

{
  "hex": "#40b3d8",
  "rgb": {
    "r": 64,
    "g": 179,
    "b": 216
  },
  "hsl": {
    "h": 194.605,
    "s": 66.087,
    "l": 54.902
  },
  "oklch": {
    "l": 0.7178,
    "c": 0.11388,
    "h": 223.4
  },
  "luminance": 0.38288
}

Semantic roles & 50–950 ramp

primary

#40B3D8

secondary

#DAA99A

accent

#683FE9

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B3D8

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

Preview Lab → · Contrast checker → · Palette generator →