#40B4DF#40B4DF

#40B4DF is a light, moderate cyan. Relative luminance 0.391; OKLCH L 72.3% C 0.119 H 226.9°. Best body text is #000000 at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#40B4DF
RGB	rgb(64, 180, 223)
HSL	hsl(196, 71%, 56%)
HSV	hsv(196, 71%, 87%)
CMYK	cmyk(71.3%, 19.3%, 0%, 12.5%)
CIE-LAB	lab(68.79, -18.56, -30.96)
CIE-LCH	lch(68.79, 36.09, 239.06°)
OKLab	oklab(72.32% -0.0811 -0.0867)
OKLCH	oklch(72.32% 0.119 226.9)
XYZ	xyz(31.7495, 39.0566, 75.6631)
Luminance	0.3906 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B4DF #DF6B40

analogous

#40DFBA #40B4DF #4065DF

triadic

#40B4DF #DF40B4 #B4DF40

tetradic

#40B4DF #BA40DF #DF6B40 #65DF40

square

#40B4DF #BA40DF #DF6B40 #65DF40

split-complementary

#40B4DF #DF4065 #DFBA40

monochromatic

#186D8D #2096C1 #40B4DF #74C9E8 #A9DDF1

Accessibility & contrast

On white

2.38

#40B4DF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.81

#40B4DF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B4DF

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B4DF	#FFFFFF	#000000	##000000
##40B4DF	1.00	2.38	8.81	8.81
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.81	21.00	1.00	1.00
##000000	8.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DB1E1

Deuteranopia (green-blind)

#87A1DE

Tritanopia (blue-blind)

#00C0C2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #40b4df;
/* rgb */ color: rgb(64, 180, 223);
/* oklch */ color: oklch(72.3% 0.119 226.9);

Tailwind

colors: {
  custom: {
    50: '#89cae9',
    500: '#40b4df',
    950: '#000000',
  },
}

SCSS

$custom: #40b4df;
$custom-light: #89cae9;
$custom-dark: #000000;

JSON

{
  "hex": "#40b4df",
  "rgb": {
    "r": 64,
    "g": 180,
    "b": 223
  },
  "hsl": {
    "h": 196.226,
    "s": 71.3,
    "l": 56.275
  },
  "oklch": {
    "l": 0.72319,
    "c": 0.11878,
    "h": 226.9
  },
  "luminance": 0.3906
}

Semantic roles & 50–950 ramp

primary

#40B4DF

secondary

#DEAE9D

accent

#6B3AEE

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #40B4DF

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

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