#538EF9#538EF9

#538EF9 is a light, vivid blue. Relative luminance 0.280; OKLCH L 65.9% C 0.171 H 261.3°. Best body text is #000000 at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#538EF9
RGB	rgb(83, 142, 249)
HSL	hsl(219, 93%, 65%)
HSV	hsv(219, 67%, 98%)
CMYK	cmyk(66.7%, 43%, 0%, 2.4%)
CIE-LAB	lab(59.91, 14.50, -59.17)
CIE-LCH	lch(59.91, 60.92, 283.77°)
OKLab	oklab(65.9% -0.026 -0.169)
OKLCH	oklch(65.9% 0.171 261.3)
XYZ	xyz(30.3331, 28.0215, 93.4143)
Luminance	0.2802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#538EF9 #F9BE53

analogous

#53E1F9 #538EF9 #6B53F9

triadic

#538EF9 #F9538E #8EF953

tetradic

#538EF9 #F953E1 #F9BE53 #53F96B

square

#538EF9 #F953E1 #F9BE53 #53F96B

split-complementary

#538EF9 #F96B53 #E1F953

monochromatic

#074DCB #1867F7 #538EF9 #8EB5FB #C9DCFD

Accessibility & contrast

On white

3.18

#538EF9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.61

#538EF9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #538EF9

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##538EF9	#FFFFFF	#000000	##000000
##538EF9	1.00	3.18	6.61	6.61
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.61	21.00	1.00	1.00
##000000	6.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B99FD

Deuteranopia (green-blind)

#3E89F7

Tritanopia (blue-blind)

#00A7B7

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #538ef9;
/* rgb */ color: rgb(83, 142, 249);
/* oklch */ color: oklch(65.9% 0.171 261.3);

Tailwind

colors: {
  custom: {
    50: '#94aefc',
    500: '#538ef9',
    950: '#000000',
  },
}

SCSS

$custom: #538ef9;
$custom-light: #94aefc;
$custom-dark: #000000;

JSON

{
  "hex": "#538ef9",
  "rgb": {
    "r": 83,
    "g": 142,
    "b": 249
  },
  "hsl": {
    "h": 218.675,
    "s": 93.258,
    "l": 65.098
  },
  "oklch": {
    "l": 0.659,
    "c": 0.17103,
    "h": 261.3
  },
  "luminance": 0.28025
}

Semantic roles & 50–950 ramp

primary

#538EF9

secondary

#F0DCB8

accent

#9400E6

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #538EF9

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

Preview Lab → · Contrast checker → · Palette generator →