#40B7D8#40B7D8

#40B7D8 is a light, moderate cyan. Relative luminance 0.399; OKLCH L 72.7% C 0.113 H 220.1°. Best body text is #000000 at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#40B7D8
RGB	rgb(64, 183, 216)
HSL	hsl(193, 66%, 55%)
HSV	hsv(193, 70%, 85%)
CMYK	cmyk(70.4%, 15.3%, 0%, 15.3%)
CIE-LAB	lab(69.41, -22.35, -26.18)
CIE-LCH	lch(69.41, 34.42, 229.52°)
OKLab	oklab(72.72% -0.0867 -0.0731)
OKLCH	oklch(72.72% 0.113 220.1)
XYZ	xyz(31.4374, 39.9112, 70.9992)
Luminance	0.3992 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B7D8 #D86140

analogous

#40D8AD #40B7D8 #406BD8

triadic

#40B7D8 #D840B7 #B7D840

tetradic

#40B7D8 #AD40D8 #D86140 #6BD840

square

#40B7D8 #AD40D8 #D86140 #6BD840

split-complementary

#40B7D8 #D8406B #D8AD40

monochromatic

#1B6C83 #2596B6 #40B7D8 #73CAE2 #A6DDED

Accessibility & contrast

On white

2.34

#40B7D8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.98

#40B7D8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B7D8

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B7D8	#FFFFFF	#000000	##000000
##40B7D8	1.00	2.34	8.98	8.98
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.98	21.00	1.00	1.00
##000000	8.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3B2DA

Deuteranopia (green-blind)

#8EA3D8

Tritanopia (blue-blind)

#00C2C1

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #40b7d8;
/* rgb */ color: rgb(64, 183, 216);
/* oklch */ color: oklch(72.7% 0.113 220.1);

Tailwind

colors: {
  custom: {
    50: '#88cce4',
    500: '#40b7d8',
    950: '#000000',
  },
}

SCSS

$custom: #40b7d8;
$custom-light: #88cce4;
$custom-dark: #000000;

JSON

{
  "hex": "#40b7d8",
  "rgb": {
    "r": 64,
    "g": 183,
    "b": 216
  },
  "hsl": {
    "h": 193.026,
    "s": 66.087,
    "l": 54.902
  },
  "oklch": {
    "l": 0.72723,
    "c": 0.11338,
    "h": 220.1
  },
  "luminance": 0.39915
}

Semantic roles & 50–950 ramp

primary

#40B7D8

secondary

#DAA89A

accent

#643FE9

background

#F9FCFD

surface

#F1F9FB

border

#CBD2D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #40B7D8

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

Preview Lab → · Contrast checker → · Palette generator →