#40B4D4#40B4D4

#40B4D4 is a light, moderate cyan. Relative luminance 0.385; OKLCH L 71.8% C 0.111 H 219.9°. Best body text is #000000 at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#40B4D4
RGB	rgb(64, 180, 212)
HSL	hsl(193, 63%, 54%)
HSV	hsv(193, 70%, 83%)
CMYK	cmyk(69.8%, 15.1%, 0%, 16.9%)
CIE-LAB	lab(68.37, -22.07, -25.57)
CIE-LCH	lch(68.37, 33.77, 229.20°)
OKLab	oklab(71.85% -0.0852 -0.0714)
OKLCH	oklch(71.85% 0.111 219.9)
XYZ	xyz(30.3144, 38.4825, 68.1048)
Luminance	0.3849 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B4D4 #D46040

analogous

#40D4AA #40B4D4 #406AD4

triadic

#40B4D4 #D440B4 #B4D440

tetradic

#40B4D4 #AA40D4 #D46040 #6AD440

square

#40B4D4 #AA40D4 #D46040 #6AD440

split-complementary

#40B4D4 #D4406A #D4AA40

monochromatic

#1C687D #2792AF #40B4D4 #72C8DF #A4DBEA

Accessibility & contrast

On white

2.41

#40B4D4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.70

#40B4D4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B4D4

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B4D4	#FFFFFF	#000000	##000000
##40B4D4	1.00	2.41	8.70	8.70
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.70	21.00	1.00	1.00
##000000	8.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0AFD6

Deuteranopia (green-blind)

#8CA0D4

Tritanopia (blue-blind)

#00BFBE

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #40b4d4;
/* rgb */ color: rgb(64, 180, 212);
/* oklch */ color: oklch(71.8% 0.111 219.9);

Tailwind

colors: {
  custom: {
    50: '#87cae1',
    500: '#40b4d4',
    950: '#000000',
  },
}

SCSS

$custom: #40b4d4;
$custom-light: #87cae1;
$custom-dark: #000000;

JSON

{
  "hex": "#40b4d4",
  "rgb": {
    "r": 64,
    "g": 180,
    "b": 212
  },
  "hsl": {
    "h": 192.973,
    "s": 63.248,
    "l": 54.118
  },
  "oklch": {
    "l": 0.71846,
    "c": 0.11117,
    "h": 219.9
  },
  "luminance": 0.38486
}

Semantic roles & 50–950 ramp

primary

#40B4D4

secondary

#D7A698

accent

#6542E6

background

#F9FCFD

surface

#F1F8FB

border

#CBD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B4D4

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

Preview Lab → · Contrast checker → · Palette generator →