#40B9D2#40B9D2

#40B9D2 is a light, moderate cyan. Relative luminance 0.404; OKLCH L 73.0% C 0.110 H 214.3°. Best body text is #000000 at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#40B9D2
RGB	rgb(64, 185, 210)
HSL	hsl(190, 62%, 54%)
HSV	hsv(190, 70%, 82%)
CMYK	cmyk(69.5%, 11.9%, 0%, 17.6%)
CIE-LAB	lab(69.78, -25.23, -22.32)
CIE-LCH	lch(69.78, 33.69, 221.50°)
OKLab	oklab(72.95% -0.091 -0.0622)
OKLCH	oklch(72.95% 0.11 214.3)
XYZ	xyz(31.0913, 40.4375, 67.1269)
Luminance	0.4044 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B9D2 #D25940

analogous

#40D2A2 #40B9D2 #4070D2

triadic

#40B9D2 #D240B9 #B9D240

tetradic

#40B9D2 #A240D2 #D25940 #70D240

square

#40B9D2 #A240D2 #D25940 #70D240

split-complementary

#40B9D2 #D24070 #D2A240

monochromatic

#1D6B7B #2996AC #40B9D2 #72CBDE #A3DDE9

Accessibility & contrast

On white

2.31

#40B9D2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.09

#40B9D2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B9D2

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B9D2	#FFFFFF	#000000	##000000
##40B9D2	1.00	2.31	9.09	9.09
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.09	21.00	1.00	1.00
##000000	9.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7B3D3

Deuteranopia (green-blind)

#92A4D2

Tritanopia (blue-blind)

#00C3C1

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #40b9d2;
/* rgb */ color: rgb(64, 185, 210);
/* oklch */ color: oklch(73.0% 0.110 214.3);

Tailwind

colors: {
  custom: {
    50: '#88cedf',
    500: '#40b9d2',
    950: '#000000',
  },
}

SCSS

$custom: #40b9d2;
$custom-light: #88cedf;
$custom-dark: #000000;

JSON

{
  "hex": "#40b9d2",
  "rgb": {
    "r": 64,
    "g": 185,
    "b": 210
  },
  "hsl": {
    "h": 190.274,
    "s": 61.864,
    "l": 53.725
  },
  "oklch": {
    "l": 0.72952,
    "c": 0.11019,
    "h": 214.3
  },
  "luminance": 0.40441
}

Semantic roles & 50–950 ramp

primary

#40B9D2

secondary

#D6A298

accent

#5F43E5

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B9D2

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

Preview Lab → · Contrast checker → · Palette generator →