#40B6E6#40B6E6

#40B6E6 is a light, vivid cyan. Relative luminance 0.403; OKLCH L 73.1% C 0.124 H 229.4°. Best body text is #000000 at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#40B6E6
RGB	rgb(64, 182, 230)
HSL	hsl(197, 77%, 58%)
HSV	hsv(197, 72%, 90%)
CMYK	cmyk(72.2%, 20.9%, 0%, 9.8%)
CIE-LAB	lab(69.65, -17.34, -33.45)
CIE-LCH	lch(69.65, 37.68, 242.60°)
OKLab	oklab(73.1% -0.0806 -0.0939)
OKLCH	oklch(73.1% 0.124 229.4)
XYZ	xyz(33.1195, 40.2552, 80.8721)
Luminance	0.4026 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B6E6 #E67040

analogous

#40E6C3 #40B6E6 #4063E6

triadic

#40B6E6 #E640B6 #B6E640

tetradic

#40B6E6 #C340E6 #E67040 #63E640

square

#40B6E6 #C340E6 #E67040 #63E640

split-complementary

#40B6E6 #E64063 #E6C340

monochromatic

#147298 #1B9ACE #40B6E6 #76CBED #ACDFF4

Accessibility & contrast

On white

2.32

#40B6E6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.05

#40B6E6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B6E6

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B6E6	#FFFFFF	#000000	##000000
##40B6E6	1.00	2.32	9.05	9.05
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.05	21.00	1.00	1.00
##000000	9.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DB3E8

Deuteranopia (green-blind)

#87A3E5

Tritanopia (blue-blind)

#00C3C6

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #40b6e6;
/* rgb */ color: rgb(64, 182, 230);
/* oklch */ color: oklch(73.1% 0.124 229.4);

Tailwind

colors: {
  custom: {
    50: '#8accee',
    500: '#40b6e6',
    950: '#000000',
  },
}

SCSS

$custom: #40b6e6;
$custom-light: #8accee;
$custom-dark: #000000;

JSON

{
  "hex": "#40b6e6",
  "rgb": {
    "r": 64,
    "g": 182,
    "b": 230
  },
  "hsl": {
    "h": 197.349,
    "s": 76.852,
    "l": 57.647
  },
  "oklch": {
    "l": 0.73096,
    "c": 0.12372,
    "h": 229.4
  },
  "luminance": 0.40259
}

Semantic roles & 50–950 ramp

primary

#40B6E6

secondary

#E2B39F

accent

#6C34F3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #40B6E6

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

Preview Lab → · Contrast checker → · Palette generator →