#40C4E3#40C4E3

#40C4E3 is a light, moderate cyan. Relative luminance 0.461; OKLCH L 76.2% C 0.119 H 217.0°. Best body text is #000000 at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#40C4E3
RGB	rgb(64, 196, 227)
HSL	hsl(191, 74%, 57%)
HSV	hsv(191, 72%, 89%)
CMYK	cmyk(71.8%, 13.7%, 0%, 11%)
CIE-LAB	lab(73.62, -25.48, -25.71)
CIE-LCH	lch(73.62, 36.20, 225.26°)
OKLab	oklab(76.24% -0.0951 -0.0717)
OKLCH	oklch(76.24% 0.119 217)
XYZ	xyz(35.7136, 46.1117, 79.6764)
Luminance	0.4612 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C4E3 #E35F40

analogous

#40E3B1 #40C4E3 #4073E3

triadic

#40C4E3 #E340C4 #C4E340

tetradic

#40C4E3 #B140E3 #E35F40 #73E340

square

#40C4E3 #B140E3 #E35F40 #73E340

split-complementary

#40C4E3 #E34073 #E3B140

monochromatic

#167B93 #1DA8C8 #40C4E3 #75D4EB #ABE5F3

Accessibility & contrast

On white

2.05

#40C4E3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.22

#40C4E3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C4E3

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C4E3	#FFFFFF	#000000	##000000
##40C4E3	1.00	2.05	10.22	10.22
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.22	21.00	1.00	1.00
##000000	10.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0BEE5

Deuteranopia (green-blind)

#99AEE3

Tritanopia (blue-blind)

#00CFCE

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #40c4e3;
/* rgb */ color: rgb(64, 196, 227);
/* oklch */ color: oklch(76.2% 0.119 217.0);

Tailwind

colors: {
  custom: {
    50: '#8ad6eb',
    500: '#40c4e3',
    950: '#000000',
  },
}

SCSS

$custom: #40c4e3;
$custom-light: #8ad6eb;
$custom-dark: #000000;

JSON

{
  "hex": "#40c4e3",
  "rgb": {
    "r": 64,
    "g": 196,
    "b": 227
  },
  "hsl": {
    "h": 191.411,
    "s": 74.429,
    "l": 57.059
  },
  "oklch": {
    "l": 0.76239,
    "c": 0.11914,
    "h": 217
  },
  "luminance": 0.46116
}

Semantic roles & 50–950 ramp

primary

#40C4E3

secondary

#E1AB9E

accent

#5A37F1

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0D1416

muted

#7E8384

Preview Lab

Preview with #40C4E3

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

Preview Lab → · Contrast checker → · Palette generator →