#537DE9#537DE9

#537DE9 is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.4% C 0.169 H 265.7°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#537DE9
RGB	rgb(83, 125, 233)
HSL	hsl(223, 77%, 62%)
HSV	hsv(223, 64%, 91%)
CMYK	cmyk(64.4%, 46.4%, 0%, 8.6%)
CIE-LAB	lab(54.44, 19.32, -59.07)
CIE-LCH	lch(54.44, 62.14, 288.11°)
OKLab	oklab(61.4% -0.0128 -0.169)
OKLCH	oklch(61.4% 0.169 265.7)
XYZ	xyz(25.6038, 22.3870, 80.0468)
Luminance	0.2239 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537DE9 #E9BF53

analogous

#53C8E9 #537DE9 #7453E9

triadic

#537DE9 #E9537D #7DE953

tetradic

#537DE9 #E953C8 #E9BF53 #53E974

square

#537DE9 #E953C8 #E9BF53 #53E974

split-complementary

#537DE9 #E97453 #C8E953

monochromatic

#1640AC #1D54E2 #537DE9 #89A6F0 #C0CFF7

Accessibility & contrast

On white

3.83

#537DE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#537DE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537DE9

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537DE9	#FFFFFF	#000000	##000000
##537DE9	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4689ED

Deuteranopia (green-blind)

#297CE7

Tritanopia (blue-blind)

#0096A8

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #537de9;
/* rgb */ color: rgb(83, 125, 233);
/* oklch */ color: oklch(61.4% 0.169 265.7);

Tailwind

colors: {
  custom: {
    50: '#91a2f1',
    500: '#537de9',
    950: '#000000',
  },
}

SCSS

$custom: #537de9;
$custom-light: #91a2f1;
$custom-dark: #000000;

JSON

{
  "hex": "#537de9",
  "rgb": {
    "r": 83,
    "g": 125,
    "b": 233
  },
  "hsl": {
    "h": 223.2,
    "s": 77.32,
    "l": 61.961
  },
  "oklch": {
    "l": 0.61396,
    "c": 0.16947,
    "h": 265.7
  },
  "luminance": 0.22389
}

Semantic roles & 50–950 ramp

primary

#537DE9

secondary

#E8D8B0

accent

#A00CDA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #537DE9

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

Preview Lab → · Contrast checker → · Palette generator →