#40ACD9#40ACD9

#40ACD9 is a light, moderate cyan. Relative luminance 0.356; OKLCH L 70.2% C 0.117 H 229.6°. Best body text is #000000 at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#40ACD9
RGB	rgb(64, 172, 217)
HSL	hsl(198, 67%, 55%)
HSV	hsv(198, 71%, 85%)
CMYK	cmyk(70.5%, 20.7%, 0%, 14.9%)
CIE-LAB	lab(66.21, -16.28, -31.65)
CIE-LCH	lch(66.21, 35.59, 242.78°)
OKLab	oklab(70.18% -0.0755 -0.0888)
OKLCH	oklch(70.18% 0.117 229.6)
XYZ	xyz(29.3862, 35.6015, 70.9552)
Luminance	0.3560 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40ACD9 #D96D40

analogous

#40D9B9 #40ACD9 #4060D9

triadic

#40ACD9 #D940AC #ACD940

tetradic

#40ACD9 #B940D9 #D96D40 #60D940

square

#40ACD9 #B940D9 #D96D40 #60D940

split-complementary

#40ACD9 #D94060 #D9B940

monochromatic

#1A6584 #248CB7 #40ACD9 #73C2E3 #A6D8ED

Accessibility & contrast

On white

2.59

#40ACD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.12

#40ACD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40ACD9

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40ACD9	#FFFFFF	#000000	##000000
##40ACD9	1.00	2.59	8.12	8.12
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.12	21.00	1.00	1.00
##000000	8.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95A9DB

Deuteranopia (green-blind)

#809AD8

Tritanopia (blue-blind)

#00B9BB

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #40acd9;
/* rgb */ color: rgb(64, 172, 217);
/* oklch */ color: oklch(70.2% 0.117 229.6);

Tailwind

colors: {
  custom: {
    50: '#87c4e5',
    500: '#40acd9',
    950: '#000000',
  },
}

SCSS

$custom: #40acd9;
$custom-light: #87c4e5;
$custom-dark: #000000;

JSON

{
  "hex": "#40acd9",
  "rgb": {
    "r": 64,
    "g": 172,
    "b": 217
  },
  "hsl": {
    "h": 197.647,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.7018,
    "c": 0.11654,
    "h": 229.6
  },
  "luminance": 0.35605
}

Semantic roles & 50–950 ramp

primary

#40ACD9

secondary

#DAAD9A

accent

#713EEA

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1215

muted

#7E8184

Preview Lab

Preview with #40ACD9

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

Preview Lab → · Contrast checker → · Palette generator →