#537EF0#537EF0

#537EF0 is a light, vivid blue. Relative luminance 0.231; OKLCH L 62.1% C 0.178 H 265.9°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#537EF0
RGB	rgb(83, 126, 240)
HSL	hsl(224, 84%, 63%)
HSV	hsv(224, 65%, 94%)
CMYK	cmyk(65.4%, 47.5%, 0%, 5.9%)
CIE-LAB	lab(55.12, 21.10, -61.86)
CIE-LCH	lch(55.12, 65.36, 288.84°)
OKLab	oklab(62.06% -0.0128 -0.1772)
OKLCH	oklch(62.06% 0.178 265.9)
XYZ	xyz(26.7509, 23.0494, 85.4604)
Luminance	0.2305 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537EF0 #F0C553

analogous

#53CCF0 #537EF0 #7653F0

triadic

#537EF0 #F0537E #7EF053

tetradic

#537EF0 #F053CC #F0C553 #53F076

square

#537EF0 #F053CC #F0C553 #53F076

split-complementary

#537EF0 #F07653 #CCF053

monochromatic

#103EB9 #1B54EB #537EF0 #8BA8F5 #C4D2FA

Accessibility & contrast

On white

3.74

#537EF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#537EF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537EF0

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537EF0	#FFFFFF	#000000	##000000
##537EF0	1.00	3.74	5.61	5.61
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#428CF4

Deuteranopia (green-blind)

#1E7DEE

Tritanopia (blue-blind)

#0098AB

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #537ef0;
/* rgb */ color: rgb(83, 126, 240);
/* oklch */ color: oklch(62.1% 0.178 265.9);

Tailwind

colors: {
  custom: {
    50: '#93a2f6',
    500: '#537ef0',
    950: '#000000',
  },
}

SCSS

$custom: #537ef0;
$custom-light: #93a2f6;
$custom-dark: #000000;

JSON

{
  "hex": "#537ef0",
  "rgb": {
    "r": 83,
    "g": 126,
    "b": 240
  },
  "hsl": {
    "h": 223.567,
    "s": 83.957,
    "l": 63.333
  },
  "oklch": {
    "l": 0.62058,
    "c": 0.17765,
    "h": 265.9
  },
  "luminance": 0.23052
}

Semantic roles & 50–950 ramp

primary

#537EF0

secondary

#EBDCB3

accent

#A405E0

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #537EF0

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

Preview Lab → · Contrast checker → · Palette generator →