#537FD0#537FD0

#537FD0 is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.3% C 0.133 H 261.7°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#537FD0
RGB	rgb(83, 127, 208)
HSL	hsl(219, 57%, 57%)
HSV	hsv(219, 60%, 82%)
CMYK	cmyk(60.1%, 38.9%, 0%, 18.4%)
CIE-LAB	lab(53.57, 9.62, -46.39)
CIE-LCH	lch(53.57, 47.38, 281.71°)
OKLab	oklab(60.27% -0.0193 -0.1318)
OKLCH	oklch(60.27% 0.133 261.7)
XYZ	xyz(22.5379, 21.5698, 62.6380)
Luminance	0.2157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FD0 #D0A453

analogous

#53BED0 #537FD0 #6653D0

triadic

#537FD0 #D0537F #7FD053

tetradic

#537FD0 #D053BE #D0A453 #53D066

square

#537FD0 #D053BE #D0A453 #53D066

split-complementary

#537FD0 #D06653 #BED053

monochromatic

#244684 #315FB4 #537FD0 #83A3DD #B3C7EA

Accessibility & contrast

On white

3.95

#537FD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#537FD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FD0

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FD0	#FFFFFF	#000000	##000000
##537FD0	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C86D3

Deuteranopia (green-blind)

#4B7BCE

Tritanopia (blue-blind)

#00919D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #537fd0;
/* rgb */ color: rgb(83, 127, 208);
/* oklch */ color: oklch(60.3% 0.133 261.7);

Tailwind

colors: {
  custom: {
    50: '#8da3df',
    500: '#537fd0',
    950: '#000000',
  },
}

SCSS

$custom: #537fd0;
$custom-light: #8da3df;
$custom-dark: #000000;

JSON

{
  "hex": "#537fd0",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 208
  },
  "hsl": {
    "h": 218.88,
    "s": 57.078,
    "l": 57.059
  },
  "oklch": {
    "l": 0.60272,
    "c": 0.13316,
    "h": 261.7
  },
  "luminance": 0.21572
}

Semantic roles & 50–950 ramp

primary

#537FD0

secondary

#D9C7A6

accent

#AB47E0

background

#F9FAFD

surface

#F1F3FB

border

#CBCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #537FD0

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

Preview Lab → · Contrast checker → · Palette generator →