#40B1CF#40B1CF

#40B1CF is a light, moderate cyan. Relative luminance 0.370; OKLCH L 70.9% C 0.108 H 219.0°. Best body text is #000000 at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#40B1CF
RGB	rgb(64, 177, 207)
HSL	hsl(193, 60%, 53%)
HSV	hsv(193, 69%, 81%)
CMYK	cmyk(69.1%, 14.5%, 0%, 18.8%)
CIE-LAB	lab(67.30, -22.10, -24.46)
CIE-LCH	lch(67.30, 32.96, 227.90°)
OKLab	oklab(70.93% -0.0842 -0.0682)
OKLCH	oklch(70.93% 0.108 219)
XYZ	xyz(29.0943, 37.0360, 64.6347)
Luminance	0.3704 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B1CF #CF5E40

analogous

#40CFA5 #40B1CF #4069CF

triadic

#40B1CF #CF40B1 #B1CF40

tetradic

#40B1CF #A540CF #CF5E40 #69CF40

square

#40B1CF #A540CF #CF5E40 #69CF40

split-complementary

#40B1CF #CF4069 #CFA540

monochromatic

#1E6477 #2A8DA8 #40B1CF #71C5DB #A2D9E8

Accessibility & contrast

On white

2.50

#40B1CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.41

#40B1CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B1CF

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B1CF	#FFFFFF	#000000	##000000
##40B1CF	1.00	2.50	8.41	8.41
#FFFFFF	2.50	1.00	21.00	21.00
#000000	8.41	21.00	1.00	1.00
##000000	8.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EACD1

Deuteranopia (green-blind)

#8A9ECF

Tritanopia (blue-blind)

#00BBBA

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #40b1cf;
/* rgb */ color: rgb(64, 177, 207);
/* oklch */ color: oklch(70.9% 0.108 219.0);

Tailwind

colors: {
  custom: {
    50: '#86c8dd',
    500: '#40b1cf',
    950: '#000000',
  },
}

SCSS

$custom: #40b1cf;
$custom-light: #86c8dd;
$custom-dark: #000000;

JSON

{
  "hex": "#40b1cf",
  "rgb": {
    "r": 64,
    "g": 177,
    "b": 207
  },
  "hsl": {
    "h": 192.587,
    "s": 59.833,
    "l": 53.137
  },
  "oklch": {
    "l": 0.70926,
    "c": 0.10834,
    "h": 219
  },
  "luminance": 0.37039
}

Semantic roles & 50–950 ramp

primary

#40B1CF

secondary

#D4A497

accent

#6645E3

background

#F8FCFD

surface

#F0F8FB

border

#CBD1D4

text

#0D1315

muted

#7D8283

Preview Lab

Preview with #40B1CF

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

Preview Lab → · Contrast checker → · Palette generator →