#40B5DA#40B5DA

#40B5DA is a light, moderate cyan. Relative luminance 0.392; OKLCH L 72.3% C 0.115 H 223.1°. Best body text is #000000 at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#40B5DA
RGB	rgb(64, 181, 218)
HSL	hsl(194, 68%, 55%)
HSV	hsv(194, 71%, 85%)
CMYK	cmyk(70.6%, 17%, 0%, 14.5%)
CIE-LAB	lab(68.89, -20.68, -28.06)
CIE-LCH	lch(68.89, 34.86, 233.61°)
OKLab	oklab(72.34% -0.0839 -0.0785)
OKLCH	oklch(72.34% 0.115 223.1)
XYZ	xyz(31.2879, 39.1961, 72.2327)
Luminance	0.3920 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B5DA #DA6540

analogous

#40DAB2 #40B5DA #4068DA

triadic

#40B5DA #DA40B5 #B5DA40

tetradic

#40B5DA #B240DA #DA6540 #68DA40

square

#40B5DA #B240DA #DA6540 #68DA40

split-complementary

#40B5DA #DA4068 #DAB240

monochromatic

#1A6C86 #2495B9 #40B5DA #73C9E4 #A7DDEE

Accessibility & contrast

On white

2.38

#40B5DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.84

#40B5DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B5DA

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B5DA	#FFFFFF	#000000	##000000
##40B5DA	1.00	2.38	8.84	8.84
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.84	21.00	1.00	1.00
##000000	8.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0B1DC

Deuteranopia (green-blind)

#8BA1DA

Tritanopia (blue-blind)

#00C0C1

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #40b5da;
/* rgb */ color: rgb(64, 181, 218);
/* oklch */ color: oklch(72.3% 0.115 223.1);

Tailwind

colors: {
  custom: {
    50: '#88cbe5',
    500: '#40b5da',
    950: '#000000',
  },
}

SCSS

$custom: #40b5da;
$custom-light: #88cbe5;
$custom-dark: #000000;

JSON

{
  "hex": "#40b5da",
  "rgb": {
    "r": 64,
    "g": 181,
    "b": 218
  },
  "hsl": {
    "h": 194.416,
    "s": 67.544,
    "l": 55.294
  },
  "oklch": {
    "l": 0.72336,
    "c": 0.11491,
    "h": 223.1
  },
  "luminance": 0.392
}

Semantic roles & 50–950 ramp

primary

#40B5DA

secondary

#DBAA9B

accent

#673DEA

background

#F9FCFE

surface

#F1F8FC

border

#CBD1D5

text

#0D1315

muted

#7E8284

Preview Lab

Preview with #40B5DA

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

Preview Lab → · Contrast checker → · Palette generator →