#537BE5#537BE5

#537BE5 is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.7% C 0.166 H 266.0°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#537BE5
RGB	rgb(83, 123, 229)
HSL	hsl(224, 74%, 61%)
HSV	hsv(224, 64%, 90%)
CMYK	cmyk(63.8%, 46.3%, 0%, 10.2%)
CIE-LAB	lab(53.66, 19.18, -58.07)
CIE-LCH	lch(53.66, 61.15, 288.27°)
OKLab	oklab(60.73% -0.0115 -0.1661)
OKLCH	oklch(60.73% 0.166 266)
XYZ	xyz(24.7882, 21.6598, 76.9880)
Luminance	0.2166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BE5 #E5BD53

analogous

#53C4E5 #537BE5 #7453E5

triadic

#537BE5 #E5537B #7BE553

tetradic

#537BE5 #E553C4 #E5BD53 #53E574

square

#537BE5 #E553C4 #E5BD53 #53E574

split-complementary

#537BE5 #E57453 #C4E553

monochromatic

#193FA5 #2154DA #537BE5 #88A4ED #BDCDF5

Accessibility & contrast

On white

3.94

#537BE5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#537BE5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BE5

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BE5	#FFFFFF	#000000	##000000
##537BE5	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4687E9

Deuteranopia (green-blind)

#2A7AE3

Tritanopia (blue-blind)

#0093A5

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #537be5;
/* rgb */ color: rgb(83, 123, 229);
/* oklch */ color: oklch(60.7% 0.166 266.0);

Tailwind

colors: {
  custom: {
    50: '#91a0ee',
    500: '#537be5',
    950: '#000000',
  },
}

SCSS

$custom: #537be5;
$custom-light: #91a0ee;
$custom-dark: #000000;

JSON

{
  "hex": "#537be5",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 229
  },
  "hsl": {
    "h": 223.562,
    "s": 73.737,
    "l": 61.176
  },
  "oklch": {
    "l": 0.6073,
    "c": 0.16648,
    "h": 266
  },
  "luminance": 0.21662
}

Semantic roles & 50–950 ramp

primary

#537BE5

secondary

#E5D6AE

accent

#A010D6

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #537BE5

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

Preview Lab → · Contrast checker → · Palette generator →