#40B0D0#40B0D0

#40B0D0 is a light, moderate cyan. Relative luminance 0.367; OKLCH L 70.7% C 0.109 H 220.6°. Best body text is #000000 at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#40B0D0
RGB	rgb(64, 176, 208)
HSL	hsl(193, 61%, 53%)
HSV	hsv(193, 69%, 82%)
CMYK	cmyk(69.2%, 15.4%, 0%, 18.4%)
CIE-LAB	lab(67.04, -21.27, -25.41)
CIE-LCH	lch(67.04, 33.13, 230.07°)
OKLab	oklab(70.73% -0.0828 -0.0709)
OKLCH	oklch(70.73% 0.109 220.6)
XYZ	xyz(29.0202, 36.6914, 65.2150)
Luminance	0.3669 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B0D0 #D06040

analogous

#40D0A8 #40B0D0 #4068D0

triadic

#40B0D0 #D040B0 #B0D040

tetradic

#40B0D0 #A840D0 #D06040 #68D040

square

#40B0D0 #A840D0 #D06040 #68D040

split-complementary

#40B0D0 #D04068 #D0A840

monochromatic

#1E6478 #2A8DA9 #40B0D0 #71C4DC #A2D9E8

Accessibility & contrast

On white

2.52

#40B0D0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.34

#40B0D0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B0D0

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B0D0	#FFFFFF	#000000	##000000
##40B0D0	1.00	2.52	8.34	8.34
#FFFFFF	2.52	1.00	21.00	21.00
#000000	8.34	21.00	1.00	1.00
##000000	8.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DABD2

Deuteranopia (green-blind)

#899DD0

Tritanopia (blue-blind)

#00BABA

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #40b0d0;
/* rgb */ color: rgb(64, 176, 208);
/* oklch */ color: oklch(70.7% 0.109 220.6);

Tailwind

colors: {
  custom: {
    50: '#87c7de',
    500: '#40b0d0',
    950: '#000000',
  },
}

SCSS

$custom: #40b0d0;
$custom-light: #87c7de;
$custom-dark: #000000;

JSON

{
  "hex": "#40b0d0",
  "rgb": {
    "r": 64,
    "g": 176,
    "b": 208
  },
  "hsl": {
    "h": 193.333,
    "s": 60.504,
    "l": 53.333
  },
  "oklch": {
    "l": 0.7073,
    "c": 0.10901,
    "h": 220.6
  },
  "luminance": 0.36695
}

Semantic roles & 50–950 ramp

primary

#40B0D0

secondary

#D5A597

accent

#6844E4

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #40B0D0

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

Preview Lab → · Contrast checker → · Palette generator →