#40B3CF#40B3CF

#40B3CF is a light, moderate cyan. Relative luminance 0.378; OKLCH L 71.4% C 0.108 H 217.3°. Best body text is #000000 at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#40B3CF
RGB	rgb(64, 179, 207)
HSL	hsl(192, 60%, 53%)
HSV	hsv(192, 69%, 81%)
CMYK	cmyk(69.1%, 13.5%, 0%, 18.8%)
CIE-LAB	lab(67.90, -23.12, -23.55)
CIE-LCH	lch(67.90, 33.00, 225.53°)
OKLab	oklab(71.4% -0.0862 -0.0656)
OKLCH	oklch(71.4% 0.108 217.3)
XYZ	xyz(29.4922, 37.8318, 64.7673)
Luminance	0.3784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B3CF #CF5C40

analogous

#40CFA3 #40B3CF #406BCF

triadic

#40B3CF #CF40B3 #B3CF40

tetradic

#40B3CF #A340CF #CF5C40 #6BCF40

square

#40B3CF #A340CF #CF5C40 #6BCF40

split-complementary

#40B3CF #CF406B #CFA340

monochromatic

#1E6577 #2A8FA8 #40B3CF #71C6DB #A2DAE8

Accessibility & contrast

On white

2.45

#40B3CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.57

#40B3CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B3CF

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B3CF	#FFFFFF	#000000	##000000
##40B3CF	1.00	2.45	8.57	8.57
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.57	21.00	1.00	1.00
##000000	8.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1AED1

Deuteranopia (green-blind)

#8D9FCF

Tritanopia (blue-blind)

#00BDBC

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #40b3cf;
/* rgb */ color: rgb(64, 179, 207);
/* oklch */ color: oklch(71.4% 0.108 217.3);

Tailwind

colors: {
  custom: {
    50: '#87cadd',
    500: '#40b3cf',
    950: '#000000',
  },
}

SCSS

$custom: #40b3cf;
$custom-light: #87cadd;
$custom-dark: #000000;

JSON

{
  "hex": "#40b3cf",
  "rgb": {
    "r": 64,
    "g": 179,
    "b": 207
  },
  "hsl": {
    "h": 191.748,
    "s": 59.833,
    "l": 53.137
  },
  "oklch": {
    "l": 0.71402,
    "c": 0.10833,
    "h": 217.3
  },
  "luminance": 0.37835
}

Semantic roles & 50–950 ramp

primary

#40B3CF

secondary

#D4A397

accent

#6445E3

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #40B3CF

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

Preview Lab → · Contrast checker → · Palette generator →