#40ABD9#40ABD9

#40ABD9 is a light, moderate cyan. Relative luminance 0.352; OKLCH L 69.9% C 0.117 H 230.4°. Best body text is #000000 at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#40ABD9
RGB	rgb(64, 171, 217)
HSL	hsl(198, 67%, 55%)
HSV	hsv(198, 71%, 85%)
CMYK	cmyk(70.5%, 21.2%, 0%, 14.9%)
CIE-LAB	lab(65.92, -15.74, -32.10)
CIE-LCH	lch(65.92, 35.75, 243.87°)
OKLab	oklab(69.95% -0.0745 -0.0901)
OKLCH	oklch(69.95% 0.117 230.4)
XYZ	xyz(29.1966, 35.2223, 70.8920)
Luminance	0.3523 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40ABD9 #D96E40

analogous

#40D9BA #40ABD9 #405FD9

triadic

#40ABD9 #D940AB #ABD940

tetradic

#40ABD9 #BA40D9 #D96E40 #5FD940

square

#40ABD9 #BA40D9 #D96E40 #5FD940

split-complementary

#40ABD9 #D9405F #D9BA40

monochromatic

#1A6484 #248BB7 #40ABD9 #73C1E3 #A6D8ED

Accessibility & contrast

On white

2.61

#40ABD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.05

#40ABD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40ABD9

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40ABD9	#FFFFFF	#000000	##000000
##40ABD9	1.00	2.61	8.05	8.05
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.05	21.00	1.00	1.00
##000000	8.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94A9DB

Deuteranopia (green-blind)

#7F9AD8

Tritanopia (blue-blind)

#00B8BA

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #40abd9;
/* rgb */ color: rgb(64, 171, 217);
/* oklch */ color: oklch(69.9% 0.117 230.4);

Tailwind

colors: {
  custom: {
    50: '#87c4e5',
    500: '#40abd9',
    950: '#000000',
  },
}

SCSS

$custom: #40abd9;
$custom-light: #87c4e5;
$custom-dark: #000000;

JSON

{
  "hex": "#40abd9",
  "rgb": {
    "r": 64,
    "g": 171,
    "b": 217
  },
  "hsl": {
    "h": 198.039,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.69946,
    "c": 0.11691,
    "h": 230.4
  },
  "luminance": 0.35226
}

Semantic roles & 50–950 ramp

primary

#40ABD9

secondary

#DAAE9A

accent

#723EEA

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1215

muted

#7E8184

Preview Lab

Preview with #40ABD9

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

Preview Lab → · Contrast checker → · Palette generator →