#40AED9#40AED9

#40AED9 is a light, moderate cyan. Relative luminance 0.364; OKLCH L 70.6% C 0.116 H 228.0°. Best body text is #000000 at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#40AED9
RGB	rgb(64, 174, 217)
HSL	hsl(197, 67%, 55%)
HSV	hsv(197, 71%, 85%)
CMYK	cmyk(70.5%, 19.8%, 0%, 14.9%)
CIE-LAB	lab(66.80, -17.34, -30.74)
CIE-LCH	lch(66.80, 35.29, 240.57°)
OKLab	oklab(70.65% -0.0774 -0.0862)
OKLCH	oklch(70.65% 0.116 228)
XYZ	xyz(29.7697, 36.3685, 71.0831)
Luminance	0.3637 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40AED9 #D96B40

analogous

#40D9B8 #40AED9 #4061D9

triadic

#40AED9 #D940AE #AED940

tetradic

#40AED9 #B840D9 #D96B40 #61D940

square

#40AED9 #B840D9 #D96B40 #61D940

split-complementary

#40AED9 #D94061 #D9B840

monochromatic

#1A6784 #248EB7 #40AED9 #73C4E3 #A6D9ED

Accessibility & contrast

On white

2.54

#40AED9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.27

#40AED9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40AED9

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40AED9	#FFFFFF	#000000	##000000
##40AED9	1.00	2.54	8.27	8.27
#FFFFFF	2.54	1.00	21.00	21.00
#000000	8.27	21.00	1.00	1.00
##000000	8.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97ABDB

Deuteranopia (green-blind)

#829CD8

Tritanopia (blue-blind)

#00BABC

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #40aed9;
/* rgb */ color: rgb(64, 174, 217);
/* oklch */ color: oklch(70.6% 0.116 228.0);

Tailwind

colors: {
  custom: {
    50: '#88c6e5',
    500: '#40aed9',
    950: '#000000',
  },
}

SCSS

$custom: #40aed9;
$custom-light: #88c6e5;
$custom-dark: #000000;

JSON

{
  "hex": "#40aed9",
  "rgb": {
    "r": 64,
    "g": 174,
    "b": 217
  },
  "hsl": {
    "h": 196.863,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.70649,
    "c": 0.11585,
    "h": 228
  },
  "luminance": 0.36372
}

Semantic roles & 50–950 ramp

primary

#40AED9

secondary

#DAAC9A

accent

#6E3EEA

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #40AED9

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

Preview Lab → · Contrast checker → · Palette generator →