#40B8D0#40B8D0

#40B8D0 is a light, moderate cyan. Relative luminance 0.399; OKLCH L 72.6% C 0.109 H 213.7°. Best body text is #000000 at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#40B8D0
RGB	rgb(64, 184, 208)
HSL	hsl(190, 61%, 53%)
HSV	hsv(190, 69%, 82%)
CMYK	cmyk(69.2%, 11.5%, 0%, 18.4%)
CIE-LAB	lab(69.41, -25.34, -21.79)
CIE-LCH	lch(69.41, 33.42, 220.68°)
OKLab	oklab(72.63% -0.0908 -0.0606)
OKLCH	oklch(72.63% 0.109 213.7)
XYZ	xyz(30.6352, 39.9215, 65.7533)
Luminance	0.3992 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B8D0 #D05840

analogous

#40D0A0 #40B8D0 #4070D0

triadic

#40B8D0 #D040B8 #B8D040

tetradic

#40B8D0 #A040D0 #D05840 #70D040

square

#40B8D0 #A040D0 #D05840 #70D040

split-complementary

#40B8D0 #D04070 #D0A040

monochromatic

#1E6978 #2A94A9 #40B8D0 #71CADC #A2DDE8

Accessibility & contrast

On white

2.34

#40B8D0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.99

#40B8D0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B8D0

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B8D0	#FFFFFF	#000000	##000000
##40B8D0	1.00	2.34	8.99	8.99
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.99	21.00	1.00	1.00
##000000	8.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B2D1

Deuteranopia (green-blind)

#92A3D0

Tritanopia (blue-blind)

#00C1BF

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #40b8d0;
/* rgb */ color: rgb(64, 184, 208);
/* oklch */ color: oklch(72.6% 0.109 213.7);

Tailwind

colors: {
  custom: {
    50: '#87cdde',
    500: '#40b8d0',
    950: '#000000',
  },
}

SCSS

$custom: #40b8d0;
$custom-light: #87cdde;
$custom-dark: #000000;

JSON

{
  "hex": "#40b8d0",
  "rgb": {
    "r": 64,
    "g": 184,
    "b": 208
  },
  "hsl": {
    "h": 190,
    "s": 60.504,
    "l": 53.333
  },
  "oklch": {
    "l": 0.72633,
    "c": 0.10917,
    "h": 213.7
  },
  "luminance": 0.39925
}

Semantic roles & 50–950 ramp

primary

#40B8D0

secondary

#D5A197

accent

#5F44E4

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B8D0

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

Preview Lab → · Contrast checker → · Palette generator →