#40C3E1#40C3E1

#40C3E1 is a light, moderate cyan. Relative luminance 0.456; OKLCH L 75.9% C 0.118 H 216.5°. Best body text is #000000 at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#40C3E1
RGB	rgb(64, 195, 225)
HSL	hsl(191, 73%, 57%)
HSV	hsv(191, 72%, 88%)
CMYK	cmyk(71.6%, 13.3%, 0%, 11.8%)
CIE-LAB	lab(73.25, -25.60, -25.19)
CIE-LCH	lch(73.25, 35.92, 224.53°)
OKLab	oklab(75.92% -0.0949 -0.0703)
OKLCH	oklch(75.92% 0.118 216.5)
XYZ	xyz(35.2143, 45.5523, 78.1561)
Luminance	0.4556 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C3E1 #E15E40

analogous

#40E1AF #40C3E1 #4073E1

triadic

#40C3E1 #E140C3 #C3E140

tetradic

#40C3E1 #AF40E1 #E15E40 #73E140

square

#40C3E1 #AF40E1 #E15E40 #73E140

split-complementary

#40C3E1 #E14073 #E1AF40

monochromatic

#177990 #1FA6C5 #40C3E1 #75D4E9 #AAE4F2

Accessibility & contrast

On white

2.08

#40C3E1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.11

#40C3E1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C3E1

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C3E1	#FFFFFF	#000000	##000000
##40C3E1	1.00	2.08	10.11	10.11
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.11	21.00	1.00	1.00
##000000	10.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFBDE3

Deuteranopia (green-blind)

#99ADE1

Tritanopia (blue-blind)

#00CECC

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #40c3e1;
/* rgb */ color: rgb(64, 195, 225);
/* oklch */ color: oklch(75.9% 0.118 216.5);

Tailwind

colors: {
  custom: {
    50: '#8ad5ea',
    500: '#40c3e1',
    950: '#000000',
  },
}

SCSS

$custom: #40c3e1;
$custom-light: #8ad5ea;
$custom-dark: #000000;

JSON

{
  "hex": "#40c3e1",
  "rgb": {
    "r": 64,
    "g": 195,
    "b": 225
  },
  "hsl": {
    "h": 191.18,
    "s": 72.851,
    "l": 56.667
  },
  "oklch": {
    "l": 0.75923,
    "c": 0.11809,
    "h": 216.5
  },
  "luminance": 0.45556
}

Semantic roles & 50–950 ramp

primary

#40C3E1

secondary

#DFAA9D

accent

#5A38F0

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0D1416

muted

#7E8384

Preview Lab

Preview with #40C3E1

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

Preview Lab → · Contrast checker → · Palette generator →