#40B4D5#40B4D5

#40B4D5 is a light, moderate cyan. Relative luminance 0.385; OKLCH L 71.9% C 0.112 H 220.6°. Best body text is #000000 at 8.71:1 contrast (WCAG AA passes).

Color values

HEX	#40B4D5
RGB	rgb(64, 180, 213)
HSL	hsl(193, 64%, 54%)
HSV	hsv(193, 70%, 84%)
CMYK	cmyk(70%, 15.5%, 0%, 16.5%)
CIE-LAB	lab(68.41, -21.75, -26.06)
CIE-LCH	lch(68.41, 33.95, 230.15°)
OKLab	oklab(71.89% -0.0848 -0.0728)
OKLCH	oklch(71.89% 0.112 220.6)
XYZ	xyz(30.4409, 38.5331, 68.7712)
Luminance	0.3854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B4D5 #D56140

analogous

#40D5AC #40B4D5 #406AD5

triadic

#40B4D5 #D540B4 #B4D540

tetradic

#40B4D5 #AC40D5 #D56140 #6AD540

square

#40B4D5 #AC40D5 #D56140 #6AD540

split-complementary

#40B4D5 #D5406A #D5AC40

monochromatic

#1C697F #2792B1 #40B4D5 #72C8E0 #A4DBEB

Accessibility & contrast

On white

2.41

#40B4D5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.71

#40B4D5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B4D5

8.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B4D5	#FFFFFF	#000000	##000000
##40B4D5	1.00	2.41	8.71	8.71
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.71	21.00	1.00	1.00
##000000	8.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0AFD7

Deuteranopia (green-blind)

#8BA0D5

Tritanopia (blue-blind)

#00BFBF

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #40b4d5;
/* rgb */ color: rgb(64, 180, 213);
/* oklch */ color: oklch(71.9% 0.112 220.6);

Tailwind

colors: {
  custom: {
    50: '#87cae2',
    500: '#40b4d5',
    950: '#000000',
  },
}

SCSS

$custom: #40b4d5;
$custom-light: #87cae2;
$custom-dark: #000000;

JSON

{
  "hex": "#40b4d5",
  "rgb": {
    "r": 64,
    "g": 180,
    "b": 213
  },
  "hsl": {
    "h": 193.289,
    "s": 63.948,
    "l": 54.314
  },
  "oklch": {
    "l": 0.71888,
    "c": 0.11178,
    "h": 220.6
  },
  "luminance": 0.38537
}

Semantic roles & 50–950 ramp

primary

#40B4D5

secondary

#D8A799

accent

#6641E7

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B4D5

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

Preview Lab → · Contrast checker → · Palette generator →