#40C5E1#40C5E1

#40C5E1 is a light, moderate cyan. Relative luminance 0.465; OKLCH L 76.4% C 0.118 H 215.0°. Best body text is #000000 at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#40C5E1
RGB	rgb(64, 197, 225)
HSL	hsl(190, 73%, 57%)
HSV	hsv(190, 72%, 88%)
CMYK	cmyk(71.6%, 12.4%, 0%, 11.8%)
CIE-LAB	lab(73.84, -26.60, -24.29)
CIE-LCH	lch(73.84, 36.02, 222.40°)
OKLab	oklab(76.39% -0.0969 -0.0677)
OKLCH	oklch(76.39% 0.118 215)
XYZ	xyz(35.6655, 46.4546, 78.3065)
Luminance	0.4646 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C5E1 #E15C40

analogous

#40E1AD #40C5E1 #4075E1

triadic

#40C5E1 #E140C5 #C5E140

tetradic

#40C5E1 #AD40E1 #E15C40 #75E140

square

#40C5E1 #AD40E1 #E15C40 #75E140

split-complementary

#40C5E1 #E14075 #E1AD40

monochromatic

#177B90 #1FA8C5 #40C5E1 #75D5E9 #AAE5F2

Accessibility & contrast

On white

2.04

#40C5E1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.29

#40C5E1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C5E1

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C5E1	#FFFFFF	#000000	##000000
##40C5E1	1.00	2.04	10.29	10.29
#FFFFFF	2.04	1.00	21.00	21.00
#000000	10.29	21.00	1.00	1.00
##000000	10.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1BFE3

Deuteranopia (green-blind)

#9BAEE1

Tritanopia (blue-blind)

#00CFCE

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #40c5e1;
/* rgb */ color: rgb(64, 197, 225);
/* oklch */ color: oklch(76.4% 0.118 215.0);

Tailwind

colors: {
  custom: {
    50: '#8ad7ea',
    500: '#40c5e1',
    950: '#000000',
  },
}

SCSS

$custom: #40c5e1;
$custom-light: #8ad7ea;
$custom-dark: #000000;

JSON

{
  "hex": "#40c5e1",
  "rgb": {
    "r": 64,
    "g": 197,
    "b": 225
  },
  "hsl": {
    "h": 190.435,
    "s": 72.851,
    "l": 56.667
  },
  "oklch": {
    "l": 0.76394,
    "c": 0.11818,
    "h": 215
  },
  "luminance": 0.46459
}

Semantic roles & 50–950 ramp

primary

#40C5E1

secondary

#DFA99D

accent

#5838F0

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0D1416

muted

#7E8384

Preview Lab

Preview with #40C5E1

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

Preview Lab → · Contrast checker → · Palette generator →