#40AFC9#40AFC9

#40AFC9 is a light, moderate cyan. Relative luminance 0.360; OKLCH L 70.2% C 0.105 H 216.4°. Best body text is #000000 at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#40AFC9
RGB	rgb(64, 175, 201)
HSL	hsl(191, 56%, 52%)
HSV	hsv(191, 68%, 79%)
CMYK	cmyk(68.2%, 12.9%, 0%, 21.2%)
CIE-LAB	lab(66.49, -22.95, -22.39)
CIE-LCH	lch(66.49, 32.06, 224.29°)
OKLab	oklab(70.2% -0.0845 -0.0624)
OKLCH	oklch(70.2% 0.105 216.4)
XYZ	xyz(27.9826, 35.9638, 60.7140)
Luminance	0.3597 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40AFC9 #C95A40

analogous

#40C99F #40AFC9 #406BC9

triadic

#40AFC9 #C940AF #AFC940

tetradic

#40AFC9 #9F40C9 #C95A40 #6BC940

square

#40AFC9 #9F40C9 #C95A40 #6BC940

split-complementary

#40AFC9 #C9406B #C99F40

monochromatic

#1F606F #2D899F #40AFC9 #70C3D6 #9FD7E4

Accessibility & contrast

On white

2.56

#40AFC9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.19

#40AFC9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40AFC9

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40AFC9	#FFFFFF	#000000	##000000
##40AFC9	1.00	2.56	8.19	8.19
#FFFFFF	2.56	1.00	21.00	21.00
#000000	8.19	21.00	1.00	1.00
##000000	8.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DAACA

Deuteranopia (green-blind)

#8A9CC9

Tritanopia (blue-blind)

#00B8B7

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #40afc9;
/* rgb */ color: rgb(64, 175, 201);
/* oklch */ color: oklch(70.2% 0.105 216.4);

Tailwind

colors: {
  custom: {
    50: '#86c7d9',
    500: '#40afc9',
    950: '#000000',
  },
}

SCSS

$custom: #40afc9;
$custom-light: #86c7d9;
$custom-dark: #000000;

JSON

{
  "hex": "#40afc9",
  "rgb": {
    "r": 64,
    "g": 175,
    "b": 201
  },
  "hsl": {
    "h": 191.387,
    "s": 55.918,
    "l": 51.961
  },
  "oklch": {
    "l": 0.70202,
    "c": 0.10502,
    "h": 216.4
  },
  "luminance": 0.35967
}

Semantic roles & 50–950 ramp

primary

#40AFC9

secondary

#D0A094

accent

#6549DF

background

#F8FCFD

surface

#F0F8FA

border

#CBD1D3

text

#0C1314

muted

#7D8283

Preview Lab

Preview with #40AFC9

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

Preview Lab → · Contrast checker → · Palette generator →