#40B7D3#40B7D3

#40B7D3 is a light, moderate cyan. Relative luminance 0.397; OKLCH L 72.5% C 0.111 H 216.7°. Best body text is #000000 at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#40B7D3
RGB	rgb(64, 183, 211)
HSL	hsl(191, 63%, 54%)
HSV	hsv(191, 70%, 83%)
CMYK	cmyk(69.7%, 13.3%, 0%, 17.3%)
CIE-LAB	lab(69.22, -23.91, -23.72)
CIE-LCH	lch(69.22, 33.68, 224.77°)
OKLab	oklab(72.52% -0.0886 -0.0661)
OKLCH	oklch(72.52% 0.111 216.7)
XYZ	xyz(30.8008, 39.6566, 67.6466)
Luminance	0.3966 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B7D3 #D35C40

analogous

#40D3A6 #40B7D3 #406ED3

triadic

#40B7D3 #D340B7 #B7D340

tetradic

#40B7D3 #A640D3 #D35C40 #6ED340

square

#40B7D3 #A640D3 #D35C40 #6ED340

split-complementary

#40B7D3 #D3406E #D3A640

monochromatic

#1D6A7C #2894AE #40B7D3 #72CADE #A3DDEA

Accessibility & contrast

On white

2.35

#40B7D3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.93

#40B7D3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B7D3

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B7D3	#FFFFFF	#000000	##000000
##40B7D3	1.00	2.35	8.93	8.93
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.93	21.00	1.00	1.00
##000000	8.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4B2D5

Deuteranopia (green-blind)

#90A2D3

Tritanopia (blue-blind)

#00C1C0

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #40b7d3;
/* rgb */ color: rgb(64, 183, 211);
/* oklch */ color: oklch(72.5% 0.111 216.7);

Tailwind

colors: {
  custom: {
    50: '#87cce0',
    500: '#40b7d3',
    950: '#000000',
  },
}

SCSS

$custom: #40b7d3;
$custom-light: #87cce0;
$custom-dark: #000000;

JSON

{
  "hex": "#40b7d3",
  "rgb": {
    "r": 64,
    "g": 183,
    "b": 211
  },
  "hsl": {
    "h": 191.429,
    "s": 62.553,
    "l": 53.922
  },
  "oklch": {
    "l": 0.72516,
    "c": 0.11055,
    "h": 216.7
  },
  "luminance": 0.3966
}

Semantic roles & 50–950 ramp

primary

#40B7D3

secondary

#D7A498

accent

#6142E6

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B7D3

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

Preview Lab → · Contrast checker → · Palette generator →