#40C7E3#40C7E3

#40C7E3 is a light, moderate cyan. Relative luminance 0.475; OKLCH L 76.9% C 0.119 H 214.7°. Best body text is #000000 at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#40C7E3
RGB	rgb(64, 199, 227)
HSL	hsl(190, 74%, 57%)
HSV	hsv(190, 72%, 89%)
CMYK	cmyk(71.8%, 12.3%, 0%, 11%)
CIE-LAB	lab(74.49, -26.98, -24.37)
CIE-LCH	lch(74.49, 36.36, 222.10°)
OKLab	oklab(76.94% -0.098 -0.0679)
OKLCH	oklch(76.94% 0.119 214.7)
XYZ	xyz(36.3970, 47.4786, 79.9042)
Luminance	0.4748 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C7E3 #E35C40

analogous

#40E3AE #40C7E3 #4075E3

triadic

#40C7E3 #E340C7 #C7E340

tetradic

#40C7E3 #AE40E3 #E35C40 #75E340

square

#40C7E3 #AE40E3 #E35C40 #75E340

split-complementary

#40C7E3 #E34075 #E3AE40

monochromatic

#167D93 #1DABC8 #40C7E3 #75D7EB #ABE6F3

Accessibility & contrast

On white

2.00

#40C7E3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.50

#40C7E3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C7E3

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C7E3	#FFFFFF	#000000	##000000
##40C7E3	1.00	2.00	10.50	10.50
#FFFFFF	2.00	1.00	21.00	21.00
#000000	10.50	21.00	1.00	1.00
##000000	10.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3C1E5

Deuteranopia (green-blind)

#9DB0E3

Tritanopia (blue-blind)

#00D1D0

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #40c7e3;
/* rgb */ color: rgb(64, 199, 227);
/* oklch */ color: oklch(76.9% 0.119 214.7);

Tailwind

colors: {
  custom: {
    50: '#8bd8eb',
    500: '#40c7e3',
    950: '#000000',
  },
}

SCSS

$custom: #40c7e3;
$custom-light: #8bd8eb;
$custom-dark: #000000;

JSON

{
  "hex": "#40c7e3",
  "rgb": {
    "r": 64,
    "g": 199,
    "b": 227
  },
  "hsl": {
    "h": 190.307,
    "s": 74.429,
    "l": 57.059
  },
  "oklch": {
    "l": 0.76944,
    "c": 0.11925,
    "h": 214.7
  },
  "luminance": 0.47483
}

Semantic roles & 50–950 ramp

primary

#40C7E3

secondary

#E1AA9E

accent

#5737F1

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #40C7E3

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

Preview Lab → · Contrast checker → · Palette generator →