#537EE7#537EE7

#537EE7 is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.5% C 0.166 H 265.1°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#537EE7
RGB	rgb(83, 126, 231)
HSL	hsl(223, 76%, 62%)
HSV	hsv(223, 64%, 91%)
CMYK	cmyk(64.1%, 45.5%, 0%, 9.4%)
CIE-LAB	lab(54.58, 18.02, -57.71)
CIE-LCH	lch(54.58, 60.46, 287.34°)
OKLab	oklab(61.47% -0.014 -0.165)
OKLCH	oklch(61.47% 0.166 265.1)
XYZ	xyz(25.4469, 22.5279, 78.5931)
Luminance	0.2253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537EE7 #E7BC53

analogous

#53C8E7 #537EE7 #7253E7

triadic

#537EE7 #E7537E #7EE753

tetradic

#537EE7 #E753C8 #E7BC53 #53E772

square

#537EE7 #E753C8 #E7BC53 #53E772

split-complementary

#537EE7 #E77253 #C8E753

monochromatic

#1741A8 #1F56DE #537EE7 #89A6EE #BECFF6

Accessibility & contrast

On white

3.81

#537EE7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#537EE7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537EE7

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537EE7	#FFFFFF	#000000	##000000
##537EE7	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A8AEB

Deuteranopia (green-blind)

#307CE5

Tritanopia (blue-blind)

#0096A7

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #537ee7;
/* rgb */ color: rgb(83, 126, 231);
/* oklch */ color: oklch(61.5% 0.166 265.1);

Tailwind

colors: {
  custom: {
    50: '#91a2ef',
    500: '#537ee7',
    950: '#000000',
  },
}

SCSS

$custom: #537ee7;
$custom-light: #91a2ef;
$custom-dark: #000000;

JSON

{
  "hex": "#537ee7",
  "rgb": {
    "r": 83,
    "g": 126,
    "b": 231
  },
  "hsl": {
    "h": 222.568,
    "s": 75.51,
    "l": 61.569
  },
  "oklch": {
    "l": 0.61471,
    "c": 0.16559,
    "h": 265.1
  },
  "luminance": 0.2253
}

Semantic roles & 50–950 ramp

primary

#537EE7

secondary

#E6D6AF

accent

#9D0ED8

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #537EE7

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

Preview Lab → · Contrast checker → · Palette generator →