#537FE4#537FE4

#537FE4 is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.5% C 0.160 H 264.5°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#537FE4
RGB	rgb(83, 127, 228)
HSL	hsl(222, 73%, 61%)
HSV	hsv(222, 64%, 89%)
CMYK	cmyk(63.6%, 44.3%, 0%, 10.6%)
CIE-LAB	lab(54.68, 16.39, -55.89)
CIE-LCH	lch(54.68, 58.24, 286.34°)
OKLab	oklab(61.49% -0.0155 -0.1596)
OKLCH	oklch(61.49% 0.16 264.5)
XYZ	xyz(25.1554, 22.6169, 76.4236)
Luminance	0.2262 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FE4 #E4B853

analogous

#53C7E4 #537FE4 #6F53E4

triadic

#537FE4 #E4537F #7FE453

tetradic

#537FE4 #E453C7 #E4B853 #53E46F

square

#537FE4 #E453C7 #E4B853 #53E46F

split-complementary

#537FE4 #E46F53 #C7E453

monochromatic

#1A43A3 #2259D8 #537FE4 #88A6EC #BDCEF5

Accessibility & contrast

On white

3.80

#537FE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#537FE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FE4

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FE4	#FFFFFF	#000000	##000000
##537FE4	1.00	3.80	5.52	5.52
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F8AE8

Deuteranopia (green-blind)

#377DE2

Tritanopia (blue-blind)

#0096A6

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #537fe4;
/* rgb */ color: rgb(83, 127, 228);
/* oklch */ color: oklch(61.5% 0.160 264.5);

Tailwind

colors: {
  custom: {
    50: '#91a3ed',
    500: '#537fe4',
    950: '#000000',
  },
}

SCSS

$custom: #537fe4;
$custom-light: #91a3ed;
$custom-dark: #000000;

JSON

{
  "hex": "#537fe4",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 228
  },
  "hsl": {
    "h": 221.793,
    "s": 72.864,
    "l": 60.98
  },
  "oklch": {
    "l": 0.61486,
    "c": 0.16036,
    "h": 264.5
  },
  "luminance": 0.22619
}

Semantic roles & 50–950 ramp

primary

#537FE4

secondary

#E5D4AE

accent

#9911D5

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #537FE4

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

Preview Lab → · Contrast checker → · Palette generator →