#40BDD9#40BDD9

#40BDD9 is a light, moderate cyan. Relative luminance 0.425; OKLCH L 74.2% C 0.114 H 215.9°. Best body text is #000000 at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#40BDD9
RGB	rgb(64, 189, 217)
HSL	hsl(191, 67%, 55%)
HSV	hsv(191, 71%, 85%)
CMYK	cmyk(70.5%, 12.9%, 0%, 14.9%)
CIE-LAB	lab(71.21, -25.08, -23.97)
CIE-LCH	lch(71.21, 34.69, 223.70°)
OKLab	oklab(74.18% -0.0922 -0.0668)
OKLCH	oklch(74.18% 0.114 215.9)
XYZ	xyz(32.8311, 42.4911, 72.1035)
Luminance	0.4249 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40BDD9 #D95C40

analogous

#40D9A8 #40BDD9 #4071D9

triadic

#40BDD9 #D940BD #BDD940

tetradic

#40BDD9 #A840D9 #D95C40 #71D940

square

#40BDD9 #A840D9 #D95C40 #71D940

split-complementary

#40BDD9 #D94071 #D9A840

monochromatic

#1A7184 #249CB7 #40BDD9 #73CFE3 #A6E0ED

Accessibility & contrast

On white

2.21

#40BDD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.50

#40BDD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40BDD9

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40BDD9	#FFFFFF	#000000	##000000
##40BDD9	1.00	2.21	9.50	9.50
#FFFFFF	2.21	1.00	21.00	21.00
#000000	9.50	21.00	1.00	1.00
##000000	9.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AAB7DB

Deuteranopia (green-blind)

#95A8D9

Tritanopia (blue-blind)

#00C7C6

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #40bdd9;
/* rgb */ color: rgb(64, 189, 217);
/* oklch */ color: oklch(74.2% 0.114 215.9);

Tailwind

colors: {
  custom: {
    50: '#89d1e4',
    500: '#40bdd9',
    950: '#000000',
  },
}

SCSS

$custom: #40bdd9;
$custom-light: #89d1e4;
$custom-dark: #000000;

JSON

{
  "hex": "#40bdd9",
  "rgb": {
    "r": 64,
    "g": 189,
    "b": 217
  },
  "hsl": {
    "h": 190.98,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.74183,
    "c": 0.11384,
    "h": 215.9
  },
  "luminance": 0.42495
}

Semantic roles & 50–950 ramp

primary

#40BDD9

secondary

#DAA69A

accent

#5D3EEA

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #40BDD9

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

Preview Lab → · Contrast checker → · Palette generator →