#40B5CF#40B5CF

#40B5CF is a light, moderate cyan. Relative luminance 0.386; OKLCH L 71.9% C 0.108 H 215.6°. Best body text is #000000 at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#40B5CF
RGB	rgb(64, 181, 207)
HSL	hsl(191, 60%, 53%)
HSV	hsv(191, 69%, 81%)
CMYK	cmyk(69.1%, 12.6%, 0%, 18.8%)
CIE-LAB	lab(68.49, -24.14, -22.65)
CIE-LCH	lch(68.49, 33.10, 223.17°)
OKLab	oklab(71.88% -0.0882 -0.0631)
OKLCH	oklch(71.88% 0.108 215.6)
XYZ	xyz(29.8960, 38.6393, 64.9019)
Luminance	0.3864 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B5CF #CF5A40

analogous

#40CFA1 #40B5CF #406DCF

triadic

#40B5CF #CF40B5 #B5CF40

tetradic

#40B5CF #A140CF #CF5A40 #6DCF40

square

#40B5CF #A140CF #CF5A40 #6DCF40

split-complementary

#40B5CF #CF406D #CFA140

monochromatic

#1E6777 #2A91A8 #40B5CF #71C8DB #A2DBE8

Accessibility & contrast

On white

2.41

#40B5CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.73

#40B5CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B5CF

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B5CF	#FFFFFF	#000000	##000000
##40B5CF	1.00	2.41	8.73	8.73
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.73	21.00	1.00	1.00
##000000	8.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3AFD0

Deuteranopia (green-blind)

#8FA1CF

Tritanopia (blue-blind)

#00BFBD

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #40b5cf;
/* rgb */ color: rgb(64, 181, 207);
/* oklch */ color: oklch(71.9% 0.108 215.6);

Tailwind

colors: {
  custom: {
    50: '#87cbdd',
    500: '#40b5cf',
    950: '#000000',
  },
}

SCSS

$custom: #40b5cf;
$custom-light: #87cbdd;
$custom-dark: #000000;

JSON

{
  "hex": "#40b5cf",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 207
  },
  "hsl": {
    "h": 190.909,
    "s": 59.833,
    "l": 53.137
  },
  "oklch": {
    "l": 0.71878,
    "c": 0.10841,
    "h": 215.6
  },
  "luminance": 0.38643
}

Semantic roles & 50–950 ramp

primary

#40B5CF

secondary

#D4A297

accent

#6245E3

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B5CF

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

Preview Lab → · Contrast checker → · Palette generator →