#40B7D4#40B7D4

#40B7D4 is a light, moderate cyan. Relative luminance 0.397; OKLCH L 72.6% C 0.111 H 217.4°. Best body text is #000000 at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#40B7D4
RGB	rgb(64, 183, 212)
HSL	hsl(192, 63%, 54%)
HSV	hsv(192, 70%, 83%)
CMYK	cmyk(69.8%, 13.7%, 0%, 16.9%)
CIE-LAB	lab(69.26, -23.60, -24.21)
CIE-LCH	lch(69.26, 33.81, 225.73°)
OKLab	oklab(72.56% -0.0882 -0.0675)
OKLCH	oklch(72.56% 0.111 217.4)
XYZ	xyz(30.9265, 39.7069, 68.3089)
Luminance	0.3971 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B7D4 #D45D40

analogous

#40D4A7 #40B7D4 #406DD4

triadic

#40B7D4 #D440B7 #B7D440

tetradic

#40B7D4 #A740D4 #D45D40 #6DD440

square

#40B7D4 #A740D4 #D45D40 #6DD440

split-complementary

#40B7D4 #D4406D #D4A740

monochromatic

#1C6A7D #2795AF #40B7D4 #72CADF #A4DDEA

Accessibility & contrast

On white

2.35

#40B7D4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.94

#40B7D4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B7D4

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B7D4	#FFFFFF	#000000	##000000
##40B7D4	1.00	2.35	8.94	8.94
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.94	21.00	1.00	1.00
##000000	8.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B2D6

Deuteranopia (green-blind)

#8FA3D4

Tritanopia (blue-blind)

#00C1C0

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #40b7d4;
/* rgb */ color: rgb(64, 183, 212);
/* oklch */ color: oklch(72.6% 0.111 217.4);

Tailwind

colors: {
  custom: {
    50: '#88cce1',
    500: '#40b7d4',
    950: '#000000',
  },
}

SCSS

$custom: #40b7d4;
$custom-light: #88cce1;
$custom-dark: #000000;

JSON

{
  "hex": "#40b7d4",
  "rgb": {
    "r": 64,
    "g": 183,
    "b": 212
  },
  "hsl": {
    "h": 191.757,
    "s": 63.248,
    "l": 54.118
  },
  "oklch": {
    "l": 0.72557,
    "c": 0.11108,
    "h": 217.4
  },
  "luminance": 0.3971
}

Semantic roles & 50–950 ramp

primary

#40B7D4

secondary

#D7A598

accent

#6242E6

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B7D4

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

Preview Lab → · Contrast checker → · Palette generator →