#537EE9#537EE9

#537EE9 is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.6% C 0.168 H 265.3°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#537EE9
RGB	rgb(83, 126, 233)
HSL	hsl(223, 77%, 62%)
HSV	hsv(223, 64%, 91%)
CMYK	cmyk(64.4%, 45.9%, 0%, 8.6%)
CIE-LAB	lab(54.70, 18.71, -58.64)
CIE-LCH	lch(54.70, 61.55, 287.69°)
OKLab	oklab(61.6% -0.0137 -0.1677)
OKLCH	oklch(61.6% 0.168 265.3)
XYZ	xyz(25.7310, 22.6415, 80.0892)
Luminance	0.2264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537EE9 #E9BE53

analogous

#53C9E9 #537EE9 #7353E9

triadic

#537EE9 #E9537E #7EE953

tetradic

#537EE9 #E953C9 #E9BE53 #53E973

square

#537EE9 #E953C9 #E9BE53 #53E973

split-complementary

#537EE9 #E97353 #C9E953

monochromatic

#1641AC #1D55E2 #537EE9 #89A7F0 #C0CFF7

Accessibility & contrast

On white

3.80

#537EE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#537EE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537EE9

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537EE9	#FFFFFF	#000000	##000000
##537EE9	1.00	3.80	5.53	5.53
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#498AED

Deuteranopia (green-blind)

#2C7CE7

Tritanopia (blue-blind)

#0097A8

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #537ee9;
/* rgb */ color: rgb(83, 126, 233);
/* oklch */ color: oklch(61.6% 0.168 265.3);

Tailwind

colors: {
  custom: {
    50: '#91a2f1',
    500: '#537ee9',
    950: '#000000',
  },
}

SCSS

$custom: #537ee9;
$custom-light: #91a2f1;
$custom-dark: #000000;

JSON

{
  "hex": "#537ee9",
  "rgb": {
    "r": 83,
    "g": 126,
    "b": 233
  },
  "hsl": {
    "h": 222.8,
    "s": 77.32,
    "l": 61.961
  },
  "oklch": {
    "l": 0.616,
    "c": 0.16828,
    "h": 265.3
  },
  "luminance": 0.22644
}

Semantic roles & 50–950 ramp

primary

#537EE9

secondary

#E8D8B0

accent

#9F0CDA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #537EE9

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

Preview Lab → · Contrast checker → · Palette generator →