#40BCD9#40BCD9

#40BCD9 is a light, moderate cyan. Relative luminance 0.421; OKLCH L 73.9% C 0.114 H 216.7°. Best body text is #000000 at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#40BCD9
RGB	rgb(64, 188, 217)
HSL	hsl(191, 67%, 55%)
HSV	hsv(191, 71%, 85%)
CMYK	cmyk(70.5%, 13.4%, 0%, 14.9%)
CIE-LAB	lab(70.91, -24.57, -24.42)
CIE-LCH	lch(70.91, 34.64, 224.82°)
OKLab	oklab(73.95% -0.0912 -0.0681)
OKLCH	oklch(73.95% 0.114 216.7)
XYZ	xyz(32.6167, 42.0624, 72.0320)
Luminance	0.4207 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40BCD9 #D95D40

analogous

#40D9AA #40BCD9 #406FD9

triadic

#40BCD9 #D940BC #BCD940

tetradic

#40BCD9 #AA40D9 #D95D40 #6FD940

square

#40BCD9 #AA40D9 #D95D40 #6FD940

split-complementary

#40BCD9 #D9406F #D9AA40

monochromatic

#1A7084 #249BB7 #40BCD9 #73CEE3 #A6E0ED

Accessibility & contrast

On white

2.23

#40BCD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.41

#40BCD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40BCD9

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40BCD9	#FFFFFF	#000000	##000000
##40BCD9	1.00	2.23	9.41	9.41
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.41	21.00	1.00	1.00
##000000	9.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B6DB

Deuteranopia (green-blind)

#93A7D9

Tritanopia (blue-blind)

#00C6C5

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #40bcd9;
/* rgb */ color: rgb(64, 188, 217);
/* oklch */ color: oklch(73.9% 0.114 216.7);

Tailwind

colors: {
  custom: {
    50: '#89d0e4',
    500: '#40bcd9',
    950: '#000000',
  },
}

SCSS

$custom: #40bcd9;
$custom-light: #89d0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#40bcd9",
  "rgb": {
    "r": 64,
    "g": 188,
    "b": 217
  },
  "hsl": {
    "h": 191.373,
    "s": 66.812,
    "l": 55.098
  },
  "oklch": {
    "l": 0.73946,
    "c": 0.11381,
    "h": 216.7
  },
  "luminance": 0.42066
}

Semantic roles & 50–950 ramp

primary

#40BCD9

secondary

#DAA69A

accent

#5F3EEA

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1415

muted

#7E8283

Preview Lab

Preview with #40BCD9

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

Preview Lab → · Contrast checker → · Palette generator →