#40BFD9#40BFD9

#40BFD9 is a light, moderate cyan. Relative luminance 0.434; OKLCH L 74.7% C 0.114 H 214.3°. Best body text is #000000 at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#40BFD9
RGB	rgb(64, 191, 217)
HSL	hsl(190, 67%, 55%)
HSV	hsv(190, 71%, 85%)
CMYK	cmyk(70.5%, 12%, 0%, 14.9%)
CIE-LAB	lab(71.80, -26.08, -23.07)
CIE-LCH	lch(71.80, 34.82, 221.50°)
OKLab	oklab(74.66% -0.0941 -0.0643)
OKLCH	oklch(74.66% 0.114 214.3)
XYZ	xyz(33.2642, 43.3575, 72.2479)
Luminance	0.4336 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40BFD9 #D95A40

analogous

#40D9A6 #40BFD9 #4073D9

triadic

#40BFD9 #D940BF #BFD940

tetradic

#40BFD9 #A640D9 #D95A40 #73D940

square

#40BFD9 #A640D9 #D95A40 #73D940

split-complementary

#40BFD9 #D94073 #D9A640

monochromatic

#1A7284 #249EB7 #40BFD9 #73D0E3 #A6E1ED

Accessibility & contrast

On white

2.17

#40BFD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.67

#40BFD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40BFD9

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40BFD9	#FFFFFF	#000000	##000000
##40BFD9	1.00	2.17	9.67	9.67
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.67	21.00	1.00	1.00
##000000	9.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACB9DA

Deuteranopia (green-blind)

#97A9D9

Tritanopia (blue-blind)

#00C9C7

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #40bfd9;
/* rgb */ color: rgb(64, 191, 217);
/* oklch */ color: oklch(74.7% 0.114 214.3);

Tailwind

colors: {
  custom: {
    50: '#89d2e4',
    500: '#40bfd9',
    950: '#000000',
  },
}

SCSS

$custom: #40bfd9;
$custom-light: #89d2e4;
$custom-dark: #000000;

JSON

{
  "hex": "#40bfd9",
  "rgb": {
    "r": 64,
    "g": 191,
    "b": 217
  },
  "hsl": {
    "h": 190.196,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.74656,
    "c": 0.11399,
    "h": 214.3
  },
  "luminance": 0.43361
}

Semantic roles & 50–950 ramp

primary

#40BFD9

secondary

#DAA59A

accent

#5B3EEA

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #40BFD9

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

Preview Lab → · Contrast checker → · Palette generator →