#537FE9#537FE9

#537FE9 is a mid, vivid blue. Relative luminance 0.229; OKLCH L 61.8% C 0.167 H 265.0°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#537FE9
RGB	rgb(83, 127, 233)
HSL	hsl(222, 77%, 62%)
HSV	hsv(222, 64%, 91%)
CMYK	cmyk(64.4%, 45.5%, 0%, 8.6%)
CIE-LAB	lab(54.97, 18.09, -58.21)
CIE-LCH	lch(54.97, 60.96, 287.27°)
OKLab	oklab(61.8% -0.0147 -0.1664)
OKLCH	oklch(61.8% 0.167 265)
XYZ	xyz(25.8595, 22.8985, 80.1321)
Luminance	0.2290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FE9 #E9BD53

analogous

#53CAE9 #537FE9 #7253E9

triadic

#537FE9 #E9537F #7FE953

tetradic

#537FE9 #E953CA #E9BD53 #53E972

square

#537FE9 #E953CA #E9BD53 #53E972

split-complementary

#537FE9 #E97253 #CAE953

monochromatic

#1642AC #1D57E2 #537FE9 #89A7F0 #C0D0F7

Accessibility & contrast

On white

3.76

#537FE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#537FE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FE9

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FE9	#FFFFFF	#000000	##000000
##537FE9	1.00	3.76	5.58	5.58
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B8BED

Deuteranopia (green-blind)

#2F7DE7

Tritanopia (blue-blind)

#0097A9

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #537fe9;
/* rgb */ color: rgb(83, 127, 233);
/* oklch */ color: oklch(61.8% 0.167 265.0);

Tailwind

colors: {
  custom: {
    50: '#91a3f1',
    500: '#537fe9',
    950: '#000000',
  },
}

SCSS

$custom: #537fe9;
$custom-light: #91a3f1;
$custom-dark: #000000;

JSON

{
  "hex": "#537fe9",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 233
  },
  "hsl": {
    "h": 222.4,
    "s": 77.32,
    "l": 61.961
  },
  "oklch": {
    "l": 0.61804,
    "c": 0.1671,
    "h": 265
  },
  "luminance": 0.22901
}

Semantic roles & 50–950 ramp

primary

#537FE9

secondary

#E8D7B0

accent

#9D0CDA

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #537FE9

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

Preview Lab → · Contrast checker → · Palette generator →