#40A9BF#40A9BF

#40A9BF is a light, moderate cyan. Relative luminance 0.332; OKLCH L 68.4% C 0.100 H 214.2°. Best body text is #000000 at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#40A9BF
RGB	rgb(64, 169, 191)
HSL	hsl(190, 50%, 50%)
HSV	hsv(190, 66%, 75%)
CMYK	cmyk(66.5%, 11.5%, 0%, 25.1%)
CIE-LAB	lab(64.34, -22.97, -20.12)
CIE-LCH	lch(64.34, 30.54, 221.21°)
OKLab	oklab(68.36% -0.0823 -0.0559)
OKLCH	oklch(68.36% 0.1 214.2)
XYZ	xyz(25.7024, 33.2247, 54.3386)
Luminance	0.3323 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A9BF #BF5640

analogous

#40BF96 #40A9BF #4069BF

triadic

#40A9BF #BF40A9 #A9BF40

tetradic

#40A9BF #9640BF #BF5640 #69BF40

square

#40A9BF #9640BF #BF5640 #69BF40

split-complementary

#40A9BF #BF4069 #BF9640

monochromatic

#215863 #318091 #40A9BF #6EBECE #9CD2DE

Accessibility & contrast

On white

2.75

#40A9BF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.65

#40A9BF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A9BF

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A9BF	#FFFFFF	#000000	##000000
##40A9BF	1.00	2.75	7.65	7.65
#FFFFFF	2.75	1.00	21.00	21.00
#000000	7.65	21.00	1.00	1.00
##000000	7.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99A4C0

Deuteranopia (green-blind)

#8796BF

Tritanopia (blue-blind)

#00B1B0

Achromatopsia (no color)

#9C9C9C

Design tokens & code

CSS

--color: #40a9bf;
/* rgb */ color: rgb(64, 169, 191);
/* oklch */ color: oklch(68.4% 0.100 214.2);

Tailwind

colors: {
  custom: {
    50: '#84c2d2',
    500: '#40a9bf',
    950: '#000000',
  },
}

SCSS

$custom: #40a9bf;
$custom-light: #84c2d2;
$custom-dark: #000000;

JSON

{
  "hex": "#40a9bf",
  "rgb": {
    "r": 64,
    "g": 169,
    "b": 191
  },
  "hsl": {
    "h": 190.394,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.68355,
    "c": 0.09954,
    "h": 214.2
  },
  "luminance": 0.33228
}

Semantic roles & 50–950 ramp

primary

#40A9BF

secondary

#CA9B91

accent

#674ED9

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0C1214

muted

#7D8182

Preview Lab

Preview with #40A9BF

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

Preview Lab → · Contrast checker → · Palette generator →