#40A4BB#40A4BB

#40A4BB is a light, moderate cyan. Relative luminance 0.312; OKLCH L 67.0% C 0.097 H 215.8°. Best body text is #000000 at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#40A4BB
RGB	rgb(64, 164, 187)
HSL	hsl(191, 49%, 49%)
HSV	hsv(191, 66%, 73%)
CMYK	cmyk(65.8%, 12.3%, 0%, 26.7%)
CIE-LAB	lab(62.70, -21.63, -20.39)
CIE-LCH	lch(62.70, 29.73, 223.31°)
OKLab	oklab(66.99% -0.0787 -0.0567)
OKLCH	oklch(66.99% 0.097 215.8)
XYZ	xyz(24.3557, 31.2261, 51.7477)
Luminance	0.3123 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A4BB #BB5740

analogous

#40BB95 #40A4BB #4066BB

triadic

#40A4BB #BB40A4 #A4BB40

tetradic

#40A4BB #9540BB #BB5740 #66BB40

square

#40A4BB #9540BB #BB5740 #66BB40

split-complementary

#40A4BB #BB4066 #BB9540

monochromatic

#215460 #307C8D #40A4BB #6CBACD #99D0DC

Accessibility & contrast

On white

2.90

#40A4BB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.25

#40A4BB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A4BB

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A4BB	#FFFFFF	#000000	##000000
##40A4BB	1.00	2.90	7.25	7.25
#FFFFFF	2.90	1.00	21.00	21.00
#000000	7.25	21.00	1.00	1.00
##000000	7.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#949FBC

Deuteranopia (green-blind)

#8292BB

Tritanopia (blue-blind)

#00ACAB

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #40a4bb;
/* rgb */ color: rgb(64, 164, 187);
/* oklch */ color: oklch(67.0% 0.097 215.8);

Tailwind

colors: {
  custom: {
    50: '#83bfcf',
    500: '#40a4bb',
    950: '#000000',
  },
}

SCSS

$custom: #40a4bb;
$custom-light: #83bfcf;
$custom-dark: #000000;

JSON

{
  "hex": "#40a4bb",
  "rgb": {
    "r": 64,
    "g": 164,
    "b": 187
  },
  "hsl": {
    "h": 191.22,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.66987,
    "c": 0.09704,
    "h": 215.8
  },
  "luminance": 0.31229
}

Semantic roles & 50–950 ramp

primary

#40A4BB

secondary

#C8998F

accent

#694FD9

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0C1213

muted

#7D8182

Preview Lab

Preview with #40A4BB

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

Preview Lab → · Contrast checker → · Palette generator →