#40C1E3#40C1E3

#40C1E3 is a light, moderate cyan. Relative luminance 0.448; OKLCH L 75.5% C 0.119 H 219.3°. Best body text is #000000 at 9.96:1 contrast (WCAG AA passes).

Color values

HEX	#40C1E3
RGB	rgb(64, 193, 227)
HSL	hsl(193, 74%, 57%)
HSV	hsv(193, 72%, 89%)
CMYK	cmyk(71.8%, 15%, 0%, 11%)
CIE-LAB	lab(72.74, -23.97, -27.06)
CIE-LCH	lch(72.74, 36.15, 228.46°)
OKLab	oklab(75.53% -0.0922 -0.0756)
OKLCH	oklch(75.53% 0.119 219.3)
XYZ	xyz(35.0437, 44.7719, 79.4531)
Luminance	0.4478 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C1E3 #E36240

analogous

#40E3B3 #40C1E3 #4070E3

triadic

#40C1E3 #E340C1 #C1E340

tetradic

#40C1E3 #B340E3 #E36240 #70E340

square

#40C1E3 #B340E3 #E36240 #70E340

split-complementary

#40C1E3 #E34070 #E3B340

monochromatic

#167993 #1DA5C8 #40C1E3 #75D2EB #ABE4F3

Accessibility & contrast

On white

2.11

#40C1E3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.96

#40C1E3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C1E3

9.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C1E3	#FFFFFF	#000000	##000000
##40C1E3	1.00	2.11	9.96	9.96
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.96	21.00	1.00	1.00
##000000	9.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACBCE5

Deuteranopia (green-blind)

#95ABE3

Tritanopia (blue-blind)

#00CCCC

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #40c1e3;
/* rgb */ color: rgb(64, 193, 227);
/* oklch */ color: oklch(75.5% 0.119 219.3);

Tailwind

colors: {
  custom: {
    50: '#8ad4ec',
    500: '#40c1e3',
    950: '#000000',
  },
}

SCSS

$custom: #40c1e3;
$custom-light: #8ad4ec;
$custom-dark: #000000;

JSON

{
  "hex": "#40c1e3",
  "rgb": {
    "r": 64,
    "g": 193,
    "b": 227
  },
  "hsl": {
    "h": 192.515,
    "s": 74.429,
    "l": 57.059
  },
  "oklch": {
    "l": 0.75534,
    "c": 0.11923,
    "h": 219.3
  },
  "luminance": 0.44776
}

Semantic roles & 50–950 ramp

primary

#40C1E3

secondary

#E1AC9E

accent

#5E37F1

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0D1416

muted

#7E8384

Preview Lab

Preview with #40C1E3

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

Preview Lab → · Contrast checker → · Palette generator →