#40A4F9#40A4F9

#40A4F9 is a light, vivid cyan. Relative luminance 0.345; OKLCH L 70.0% C 0.155 H 248.0°. Best body text is #000000 at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#40A4F9
RGB	rgb(64, 164, 249)
HSL	hsl(208, 94%, 61%)
HSV	hsv(208, 74%, 98%)
CMYK	cmyk(74.3%, 34.1%, 0%, 2.4%)
CIE-LAB	lab(65.34, -1.03, -50.57)
CIE-LCH	lch(65.34, 50.58, 268.84°)
OKLab	oklab(69.96% -0.0581 -0.1437)
OKLCH	oklch(69.96% 0.155 248)
XYZ	xyz(32.4822, 34.4767, 94.5469)
Luminance	0.3448 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40A4F9 #F99540

analogous

#40F9F2 #40A4F9 #4048F9

triadic

#40A4F9 #F940A4 #A4F940

tetradic

#40A4F9 #F240F9 #F99540 #48F940

square

#40A4F9 #F240F9 #F99540 #48F940

split-complementary

#40A4F9 #F94048 #F9F240

monochromatic

#0667B9 #0887F4 #40A4F9 #7BC0FB #B7DDFD

Accessibility & contrast

On white

2.66

#40A4F9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.90

#40A4F9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40A4F9

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40A4F9	#FFFFFF	#000000	##000000
##40A4F9	1.00	2.66	7.90	7.90
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.90	21.00	1.00	1.00
##000000	7.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7DA8FD

Deuteranopia (green-blind)

#6297F7

Tritanopia (blue-blind)

#00B8C3

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #40a4f9;
/* rgb */ color: rgb(64, 164, 249);
/* oklch */ color: oklch(70.0% 0.155 248.0);

Tailwind

colors: {
  custom: {
    50: '#8cbefb',
    500: '#40a4f9',
    950: '#000000',
  },
}

SCSS

$custom: #40a4f9;
$custom-light: #8cbefb;
$custom-dark: #000000;

JSON

{
  "hex": "#40a4f9",
  "rgb": {
    "r": 64,
    "g": 164,
    "b": 249
  },
  "hsl": {
    "h": 207.568,
    "s": 93.909,
    "l": 61.373
  },
  "oklch": {
    "l": 0.69955,
    "c": 0.15503,
    "h": 248
  },
  "luminance": 0.3448
}

Semantic roles & 50–950 ramp

primary

#40A4F9

secondary

#EDC8A8

accent

#6900E6

background

#F9FBFF

surface

#F2F6FF

border

#CCD0D7

text

#0E1217

muted

#7E8185

Preview Lab

Preview with #40A4F9

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

Preview Lab → · Contrast checker → · Palette generator →