#537CF3#537CF3

#537CF3 is a mid, vivid blue. Relative luminance 0.227; OKLCH L 61.9% C 0.184 H 266.7°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#537CF3
RGB	rgb(83, 124, 243)
HSL	hsl(225, 87%, 64%)
HSV	hsv(225, 66%, 95%)
CMYK	cmyk(65.8%, 49%, 0%, 4.7%)
CIE-LAB	lab(54.79, 23.36, -64.07)
CIE-LCH	lch(54.79, 68.20, 290.03°)
OKLab	oklab(61.86% -0.0106 -0.1837)
OKLCH	oklch(61.86% 0.184 266.7)
XYZ	xyz(26.9470, 22.7228, 87.7425)
Luminance	0.2273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537CF3 #F3CA53

analogous

#53CCF3 #537CF3 #7A53F3

triadic

#537CF3 #F3537C #7CF353

tetradic

#537CF3 #F353CC #F3CA53 #53F37A

square

#537CF3 #F353CC #F3CA53 #53F37A

split-complementary

#537CF3 #F37A53 #CCF353

monochromatic

#0D3BBE #1A50EF #537CF3 #8CA8F7 #C5D3FB

Accessibility & contrast

On white

3.79

#537CF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#537CF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537CF3

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537CF3	#FFFFFF	#000000	##000000
##537CF3	1.00	3.79	5.55	5.55
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A8BF7

Deuteranopia (green-blind)

#037CF1

Tritanopia (blue-blind)

#0098AC

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #537cf3;
/* rgb */ color: rgb(83, 124, 243);
/* oklch */ color: oklch(61.9% 0.184 266.7);

Tailwind

colors: {
  custom: {
    50: '#93a1f8',
    500: '#537cf3',
    950: '#000000',
  },
}

SCSS

$custom: #537cf3;
$custom-light: #93a1f8;
$custom-dark: #000000;

JSON

{
  "hex": "#537cf3",
  "rgb": {
    "r": 83,
    "g": 124,
    "b": 243
  },
  "hsl": {
    "h": 224.625,
    "s": 86.957,
    "l": 63.922
  },
  "oklch": {
    "l": 0.61861,
    "c": 0.18403,
    "h": 266.7
  },
  "luminance": 0.22725
}

Semantic roles & 50–950 ramp

primary

#537CF3

secondary

#EDDFB5

accent

#AA02E4

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #537CF3

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

Preview Lab → · Contrast checker → · Palette generator →