#537BE9#537BE9

#537BE9 is a mid, vivid blue. Relative luminance 0.219; OKLCH L 61.0% C 0.172 H 266.4°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX#537BE9
RGBrgb(83, 123, 233)
HSLhsl(224, 77%, 62%)
HSVhsv(224, 64%, 91%)
CMYKcmyk(64.4%, 47.2%, 0%, 8.6%)
CIE-LABlab(53.91, 20.54, -59.92)
CIE-LCHlch(53.91, 63.34, 288.93°)
OKLaboklab(60.99% -0.0109 -0.1715)
OKLCHoklch(60.99% 0.172 266.4)
XYZxyz(25.3531, 21.8858, 79.9633)
Luminance0.2189 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#537BE9 #E9C153
analogous
#53C6E9 #537BE9 #7653E9
triadic
#537BE9 #E9537B #7BE953
tetradic
#537BE9 #E953C6 #E9C153 #53E976
square
#537BE9 #E953C6 #E9C153 #53E976
split-complementary
#537BE9 #E97653 #C6E953
monochromatic
#163EAC #1D51E2 #537BE9 #89A5F0 #C0CEF7

Accessibility & contrast

On white

3.91
#537BE9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.38
#537BE9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BE9
5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##537BE9#FFFFFF#000000##000000
##537BE91.003.915.385.38
#FFFFFF3.911.0021.0021.00
#0000005.3821.001.001.00
##0000005.3821.001.001.00

Color blindness preview

Protanopia (red-blind)
#4288ED
Deuteranopia (green-blind)
#237AE7
Tritanopia (blue-blind)
#0094A7
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #537be9;
/* rgb */ color: rgb(83, 123, 233);
/* oklch */ color: oklch(61.0% 0.172 266.4);
Tailwind
colors: {
  custom: {
    50: '#92a0f1',
    500: '#537be9',
    950: '#000000',
  },
}
SCSS
$custom: #537be9;
$custom-light: #92a0f1;
$custom-dark: #000000;
JSON
{
  "hex": "#537be9",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 233
  },
  "hsl": {
    "h": 224,
    "s": 77.32,
    "l": 61.961
  },
  "oklch": {
    "l": 0.60992,
    "c": 0.17187,
    "h": 266.4
  },
  "luminance": 0.21888
}

Semantic roles & 50–950 ramp

primary
#537BE9
secondary
#E8D9B0
accent
#A30CDA
background
#F9F9FE
surface
#F2F2FD
border
#CCCCD5
text
#0E0E17
muted
#7E7E85

Preview Lab

Preview with #537BE9

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

Preview Lab → · Contrast checker → · Palette generator →

#537BE9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva