#40A3BA#40A3BA

#40A3BA is a light, moderate cyan. Relative luminance 0.308; OKLCH L 66.7% C 0.096 H 215.9°. Best body text is #000000 at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#40A3BA
RGB	rgb(64, 163, 186)
HSL	hsl(191, 49%, 49%)
HSV	hsv(191, 66%, 73%)
CMYK	cmyk(65.6%, 12.4%, 0%, 27.1%)
CIE-LAB	lab(62.36, -21.42, -20.34)
CIE-LCH	lch(62.36, 29.54, 223.52°)
OKLab	oklab(66.7% -0.0781 -0.0566)
OKLCH	oklch(66.7% 0.096 215.9)
XYZ	xyz(24.0708, 30.8269, 51.1265)
Luminance	0.3083 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A3BA #BA5740

analogous

#40BA94 #40A3BA #4066BA

triadic

#40A3BA #BA40A3 #A3BA40

tetradic

#40A3BA #9440BA #BA5740 #66BA40

square

#40A3BA #9440BA #BA5740 #66BA40

split-complementary

#40A3BA #BA4066 #BA9440

monochromatic

#21535F #307B8C #40A3BA #6BBACC #99CFDC

Accessibility & contrast

On white

2.93

#40A3BA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.17

#40A3BA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A3BA

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A3BA	#FFFFFF	#000000	##000000
##40A3BA	1.00	2.93	7.17	7.17
#FFFFFF	2.93	1.00	21.00	21.00
#000000	7.17	21.00	1.00	1.00
##000000	7.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#939EBB

Deuteranopia (green-blind)

#8291BA

Tritanopia (blue-blind)

#00ABAA

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #40a3ba;
/* rgb */ color: rgb(64, 163, 186);
/* oklch */ color: oklch(66.7% 0.096 215.9);

Tailwind

colors: {
  custom: {
    50: '#83bece',
    500: '#40a3ba',
    950: '#000000',
  },
}

SCSS

$custom: #40a3ba;
$custom-light: #83bece;
$custom-dark: #000000;

JSON

{
  "hex": "#40a3ba",
  "rgb": {
    "r": 64,
    "g": 163,
    "b": 186
  },
  "hsl": {
    "h": 191.311,
    "s": 48.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.66704,
    "c": 0.09644,
    "h": 215.9
  },
  "luminance": 0.3083
}

Semantic roles & 50–950 ramp

primary

#40A3BA

secondary

#C8998E

accent

#694FD8

background

#F8FBFC

surface

#F0F7F9

border

#CBD0D2

text

#0C1213

muted

#7D8182

Preview Lab

Preview with #40A3BA

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

Preview Lab → · Contrast checker → · Palette generator →