#40B1DB#40B1DB

#40B1DB is a light, moderate cyan. Relative luminance 0.376; OKLCH L 71.4% C 0.117 H 226.9°. Best body text is #000000 at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#40B1DB
RGB	rgb(64, 177, 219)
HSL	hsl(196, 68%, 55%)
HSV	hsv(196, 71%, 86%)
CMYK	cmyk(70.8%, 19.2%, 0%, 14.1%)
CIE-LAB	lab(67.76, -18.27, -30.36)
CIE-LCH	lch(67.76, 35.44, 238.95°)
OKLab	oklab(71.44% -0.0797 -0.0851)
OKLCH	oklch(71.44% 0.117 226.9)
XYZ	xyz(30.6175, 37.6452, 72.6567)
Luminance	0.3765 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B1DB #DB6A40

analogous

#40DBB7 #40B1DB #4063DB

triadic

#40B1DB #DB40B1 #B1DB40

tetradic

#40B1DB #B740DB #DB6A40 #63DB40

square

#40B1DB #B740DB #DB6A40 #63DB40

split-complementary

#40B1DB #DB4063 #DBB740

monochromatic

#196987 #2392BB #40B1DB #73C6E5 #A7DBEE

Accessibility & contrast

On white

2.46

#40B1DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.53

#40B1DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B1DB

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B1DB	#FFFFFF	#000000	##000000
##40B1DB	1.00	2.46	8.53	8.53
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.53	21.00	1.00	1.00
##000000	8.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BAEDD

Deuteranopia (green-blind)

#859EDA

Tritanopia (blue-blind)

#00BDBF

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #40b1db;
/* rgb */ color: rgb(64, 177, 219);
/* oklch */ color: oklch(71.4% 0.117 226.9);

Tailwind

colors: {
  custom: {
    50: '#88c8e6',
    500: '#40b1db',
    950: '#000000',
  },
}

SCSS

$custom: #40b1db;
$custom-light: #88c8e6;
$custom-dark: #000000;

JSON

{
  "hex": "#40b1db",
  "rgb": {
    "r": 64,
    "g": 177,
    "b": 219
  },
  "hsl": {
    "h": 196.258,
    "s": 68.282,
    "l": 55.49
  },
  "oklch": {
    "l": 0.7144,
    "c": 0.11654,
    "h": 226.9
  },
  "luminance": 0.37649
}

Semantic roles & 50–950 ramp

primary

#40B1DB

secondary

#DCAD9B

accent

#6C3DEB

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #40B1DB

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

Preview Lab → · Contrast checker → · Palette generator →