#40B4D3#40B4D3

#40B4D3 is a light, moderate cyan. Relative luminance 0.384; OKLCH L 71.8% C 0.111 H 219.3°. Best body text is #000000 at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#40B4D3
RGB	rgb(64, 180, 211)
HSL	hsl(193, 63%, 54%)
HSV	hsv(193, 70%, 83%)
CMYK	cmyk(69.7%, 14.7%, 0%, 17.3%)
CIE-LAB	lab(68.34, -22.38, -25.08)
CIE-LCH	lch(68.34, 33.61, 228.25°)
OKLab	oklab(71.8% -0.0856 -0.07)
OKLCH	oklch(71.8% 0.111 219.3)
XYZ	xyz(30.1886, 38.4322, 67.4425)
Luminance	0.3844 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B4D3 #D35F40

analogous

#40D3A9 #40B4D3 #406BD3

triadic

#40B4D3 #D340B4 #B4D340

tetradic

#40B4D3 #A940D3 #D35F40 #6BD340

square

#40B4D3 #A940D3 #D35F40 #6BD340

split-complementary

#40B4D3 #D3406B #D3A940

monochromatic

#1D687C #2892AE #40B4D3 #72C8DE #A3DBEA

Accessibility & contrast

On white

2.42

#40B4D3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.69

#40B4D3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B4D3

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B4D3	#FFFFFF	#000000	##000000
##40B4D3	1.00	2.42	8.69	8.69
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.69	21.00	1.00	1.00
##000000	8.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1AFD5

Deuteranopia (green-blind)

#8CA0D3

Tritanopia (blue-blind)

#00BEBE

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #40b4d3;
/* rgb */ color: rgb(64, 180, 211);
/* oklch */ color: oklch(71.8% 0.111 219.3);

Tailwind

colors: {
  custom: {
    50: '#87cae0',
    500: '#40b4d3',
    950: '#000000',
  },
}

SCSS

$custom: #40b4d3;
$custom-light: #87cae0;
$custom-dark: #000000;

JSON

{
  "hex": "#40b4d3",
  "rgb": {
    "r": 64,
    "g": 180,
    "b": 211
  },
  "hsl": {
    "h": 192.653,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.71805,
    "c": 0.11057,
    "h": 219.3
  },
  "luminance": 0.38436
}

Semantic roles & 50–950 ramp

primary

#40B4D3

secondary

#D7A598

accent

#6542E6

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B4D3

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

Preview Lab → · Contrast checker → · Palette generator →