#40B7DA#40B7DA

#40B7DA is a light, moderate cyan. Relative luminance 0.400; OKLCH L 72.8% C 0.115 H 221.5°. Best body text is #000000 at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#40B7DA
RGB	rgb(64, 183, 218)
HSL	hsl(194, 68%, 55%)
HSV	hsv(194, 71%, 85%)
CMYK	cmyk(70.6%, 16.1%, 0%, 14.5%)
CIE-LAB	lab(69.48, -21.71, -27.16)
CIE-LCH	lch(69.48, 34.77, 231.36°)
OKLab	oklab(72.81% -0.0859 -0.0759)
OKLCH	oklch(72.81% 0.115 221.5)
XYZ	xyz(31.6975, 40.0153, 72.3692)
Luminance	0.4002 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B7DA #DA6340

analogous

#40DAB0 #40B7DA #406ADA

triadic

#40B7DA #DA40B7 #B7DA40

tetradic

#40B7DA #B040DA #DA6340 #6ADA40

square

#40B7DA #B040DA #DA6340 #6ADA40

split-complementary

#40B7DA #DA406A #DAB040

monochromatic

#1A6D86 #2497B9 #40B7DA #73CAE4 #A7DEEE

Accessibility & contrast

On white

2.33

#40B7DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.00

#40B7DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B7DA

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B7DA	#FFFFFF	#000000	##000000
##40B7DA	1.00	2.33	9.00	9.00
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.00	21.00	1.00	1.00
##000000	9.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2B2DC

Deuteranopia (green-blind)

#8DA3DA

Tritanopia (blue-blind)

#00C2C2

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #40b7da;
/* rgb */ color: rgb(64, 183, 218);
/* oklch */ color: oklch(72.8% 0.115 221.5);

Tailwind

colors: {
  custom: {
    50: '#88cce5',
    500: '#40b7da',
    950: '#000000',
  },
}

SCSS

$custom: #40b7da;
$custom-light: #88cce5;
$custom-dark: #000000;

JSON

{
  "hex": "#40b7da",
  "rgb": {
    "r": 64,
    "g": 183,
    "b": 218
  },
  "hsl": {
    "h": 193.636,
    "s": 67.544,
    "l": 55.294
  },
  "oklch": {
    "l": 0.72807,
    "c": 0.11463,
    "h": 221.5
  },
  "luminance": 0.40019
}

Semantic roles & 50–950 ramp

primary

#40B7DA

secondary

#DBA99B

accent

#653DEA

background

#F9FCFE

surface

#F1F9FC

border

#CBD2D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #40B7DA

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

Preview Lab → · Contrast checker → · Palette generator →