#537BD0#537BD0

#537BD0 is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.4% C 0.138 H 263.7°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#537BD0
RGB	rgb(83, 123, 208)
HSL	hsl(221, 57%, 57%)
HSV	hsv(221, 60%, 82%)
CMYK	cmyk(60.1%, 40.9%, 0%, 18.4%)
CIE-LAB	lab(52.46, 12.05, -48.15)
CIE-LCH	lch(52.46, 49.64, 284.05°)
OKLab	oklab(59.42% -0.0151 -0.137)
OKLCH	oklch(59.42% 0.138 263.7)
XYZ	xyz(22.0315, 20.5571, 62.4692)
Luminance	0.2056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BD0 #D0A853

analogous

#53BAD0 #537BD0 #6A53D0

triadic

#537BD0 #D0537B #7BD053

tetradic

#537BD0 #D053BA #D0A853 #53D06A

square

#537BD0 #D053BA #D0A853 #53D06A

split-complementary

#537BD0 #D06A53 #BAD053

monochromatic

#244384 #315BB4 #537BD0 #83A0DD #B3C5EA

Accessibility & contrast

On white

4.11

#537BD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#537BD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BD0

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BD0	#FFFFFF	#000000	##000000
##537BD0	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5683D3

Deuteranopia (green-blind)

#4478CE

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #537bd0;
/* rgb */ color: rgb(83, 123, 208);
/* oklch */ color: oklch(59.4% 0.138 263.7);

Tailwind

colors: {
  custom: {
    50: '#8ea0df',
    500: '#537bd0',
    950: '#000000',
  },
}

SCSS

$custom: #537bd0;
$custom-light: #8ea0df;
$custom-dark: #000000;

JSON

{
  "hex": "#537bd0",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 208
  },
  "hsl": {
    "h": 220.8,
    "s": 57.078,
    "l": 57.059
  },
  "oklch": {
    "l": 0.59416,
    "c": 0.13779,
    "h": 263.7
  },
  "luminance": 0.20559
}

Semantic roles & 50–950 ramp

primary

#537BD0

secondary

#D9C9A6

accent

#AF47E0

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #537BD0

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

Preview Lab → · Contrast checker → · Palette generator →