#537BE4#537BE4

#537BE4 is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.7% C 0.165 H 266.0°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#537BE4
RGB	rgb(83, 123, 228)
HSL	hsl(223, 73%, 61%)
HSV	hsv(223, 64%, 89%)
CMYK	cmyk(63.6%, 46.1%, 0%, 10.6%)
CIE-LAB	lab(53.60, 18.83, -57.60)
CIE-LCH	lch(53.60, 60.60, 288.11°)
OKLab	oklab(60.67% -0.0116 -0.1647)
OKLCH	oklch(60.67% 0.165 266)
XYZ	xyz(24.6490, 21.6041, 76.2548)
Luminance	0.2161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BE4 #E4BC53

analogous

#53C3E4 #537BE4 #7353E4

triadic

#537BE4 #E4537B #7BE453

tetradic

#537BE4 #E453C3 #E4BC53 #53E473

square

#537BE4 #E453C3 #E4BC53 #53E473

split-complementary

#537BE4 #E47353 #C3E453

monochromatic

#1A3FA3 #2254D8 #537BE4 #88A4EC #BDCCF5

Accessibility & contrast

On white

3.95

#537BE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#537BE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BE4

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BE4	#FFFFFF	#000000	##000000
##537BE4	1.00	3.95	5.32	5.32
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4787E8

Deuteranopia (green-blind)

#2C7AE2

Tritanopia (blue-blind)

#0093A4

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #537be4;
/* rgb */ color: rgb(83, 123, 228);
/* oklch */ color: oklch(60.7% 0.165 266.0);

Tailwind

colors: {
  custom: {
    50: '#91a0ed',
    500: '#537be4',
    950: '#000000',
  },
}

SCSS

$custom: #537be4;
$custom-light: #91a0ed;
$custom-dark: #000000;

JSON

{
  "hex": "#537be4",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 228
  },
  "hsl": {
    "h": 223.448,
    "s": 72.864,
    "l": 60.98
  },
  "oklch": {
    "l": 0.60665,
    "c": 0.16512,
    "h": 266
  },
  "luminance": 0.21606
}

Semantic roles & 50–950 ramp

primary

#537BE4

secondary

#E5D6AE

accent

#9F11D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #537BE4

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

Preview Lab → · Contrast checker → · Palette generator →