#537BD5#537BD5

#537BD5 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.7% C 0.145 H 264.4°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#537BD5
RGB	rgb(83, 123, 213)
HSL	hsl(222, 61%, 58%)
HSV	hsv(222, 61%, 84%)
CMYK	cmyk(61%, 42.3%, 0%, 16.5%)
CIE-LAB	lab(52.74, 13.74, -50.54)
CIE-LCH	lch(52.74, 52.38, 285.20°)
OKLab	oklab(59.72% -0.0141 -0.144)
OKLCH	oklch(59.72% 0.145 264.4)
XYZ	xyz(22.6563, 20.8070, 65.7601)
Luminance	0.2081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BD5 #D5AD53

analogous

#53BCD5 #537BD5 #6C53D5

triadic

#537BD5 #D5537B #7BD553

tetradic

#537BD5 #D553BC #D5AD53 #53D56C

square

#537BD5 #D553BC #D5AD53 #53D56C

split-complementary

#537BD5 #D56C53 #BCD553

monochromatic

#22438C #2E5ABD #537BD5 #84A1E1 #B5C6ED

Accessibility & contrast

On white

4.07

#537BD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#537BD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BD5

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BD5	#FFFFFF	#000000	##000000
##537BD5	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5284D8

Deuteranopia (green-blind)

#4078D3

Tritanopia (blue-blind)

#008F9E

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #537bd5;
/* rgb */ color: rgb(83, 123, 213);
/* oklch */ color: oklch(59.7% 0.145 264.4);

Tailwind

colors: {
  custom: {
    50: '#8ea0e2',
    500: '#537bd5',
    950: '#000000',
  },
}

SCSS

$custom: #537bd5;
$custom-light: #8ea0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#537bd5",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 213
  },
  "hsl": {
    "h": 221.538,
    "s": 60.748,
    "l": 58.039
  },
  "oklch": {
    "l": 0.59719,
    "c": 0.14466,
    "h": 264.4
  },
  "luminance": 0.20809
}

Semantic roles & 50–950 ramp

primary

#537BD5

secondary

#DCCCA8

accent

#B344E4

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #537BD5

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

Preview Lab → · Contrast checker → · Palette generator →