#537FE3#537FE3

#537FE3 is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.4% C 0.159 H 264.4°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#537FE3
RGB	rgb(83, 127, 227)
HSL	hsl(222, 72%, 61%)
HSV	hsv(222, 63%, 89%)
CMYK	cmyk(63.4%, 44.1%, 0%, 11%)
CIE-LAB	lab(54.62, 16.04, -55.42)
CIE-LCH	lch(54.62, 57.69, 286.15°)
OKLab	oklab(61.42% -0.0156 -0.1582)
OKLCH	oklch(61.42% 0.159 264.4)
XYZ	xyz(25.0170, 22.5615, 75.6946)
Luminance	0.2256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FE3 #E3B753

analogous

#53C7E3 #537FE3 #6F53E3

triadic

#537FE3 #E3537F #7FE353

tetradic

#537FE3 #E353C7 #E3B753 #53E36F

square

#537FE3 #E353C7 #E3B753 #53E36F

split-complementary

#537FE3 #E36F53 #C7E353

monochromatic

#1A44A1 #235AD6 #537FE3 #88A6EC #BCCDF4

Accessibility & contrast

On white

3.81

#537FE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#537FE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FE3

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FE3	#FFFFFF	#000000	##000000
##537FE3	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)

#4F8AE7

Deuteranopia (green-blind)

#387DE1

Tritanopia (blue-blind)

#0096A6

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #537fe3;
/* rgb */ color: rgb(83, 127, 227);
/* oklch */ color: oklch(61.4% 0.159 264.4);

Tailwind

colors: {
  custom: {
    50: '#90a3ec',
    500: '#537fe3',
    950: '#000000',
  },
}

SCSS

$custom: #537fe3;
$custom-light: #90a3ec;
$custom-dark: #000000;

JSON

{
  "hex": "#537fe3",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 227
  },
  "hsl": {
    "h": 221.667,
    "s": 72,
    "l": 60.784
  },
  "oklch": {
    "l": 0.61423,
    "c": 0.15901,
    "h": 264.4
  },
  "luminance": 0.22564
}

Semantic roles & 50–950 ramp

primary

#537FE3

secondary

#E4D4AE

accent

#9911D4

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #537FE3

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

Preview Lab → · Contrast checker → · Palette generator →