#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
RGB	rgb(83, 123, 233)
HSL	hsl(224, 77%, 62%)
HSV	hsv(224, 64%, 91%)
CMYK	cmyk(64.4%, 47.2%, 0%, 8.6%)
CIE-LAB	lab(53.91, 20.54, -59.92)
CIE-LCH	lch(53.91, 63.34, 288.93°)
OKLab	oklab(60.99% -0.0109 -0.1715)
OKLCH	oklch(60.99% 0.172 266.4)
XYZ	xyz(25.3531, 21.8858, 79.9633)
Luminance	0.2189 (WCAG relative)
Temperature	cool
Family	blue

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
##537BE9	1.00	3.91	5.38	5.38
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

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 →