#537FD9#537FD9

#537FD9 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 60.8% C 0.145 H 263.1°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#537FD9
RGB	rgb(83, 127, 217)
HSL	hsl(220, 64%, 59%)
HSV	hsv(220, 62%, 85%)
CMYK	cmyk(61.8%, 41.5%, 0%, 14.9%)
CIE-LAB	lab(54.05, 12.65, -50.70)
CIE-LCH	lch(54.05, 52.26, 284.01°)
OKLab	oklab(60.81% -0.0174 -0.1444)
OKLCH	oklch(60.81% 0.145 263.1)
XYZ	xyz(23.6767, 22.0254, 68.6358)
Luminance	0.2203 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FD9 #D9AD53

analogous

#53C2D9 #537FD9 #6A53D9

triadic

#537FD9 #D9537F #7FD953

tetradic

#537FD9 #D953C2 #D9AD53 #53D96A

square

#537FD9 #D953C2 #D9AD53 #53D96A

split-complementary

#537FD9 #D96A53 #C2D953

monochromatic

#204591 #2B5DC4 #537FD9 #85A4E4 #B7CAEF

Accessibility & contrast

On white

3.89

#537FD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#537FD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FD9

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FD9	#FFFFFF	#000000	##000000
##537FD9	1.00	3.89	5.41	5.41
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5788DD

Deuteranopia (green-blind)

#437CD7

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #537fd9;
/* rgb */ color: rgb(83, 127, 217);
/* oklch */ color: oklch(60.8% 0.145 263.1);

Tailwind

colors: {
  custom: {
    50: '#8fa3e5',
    500: '#537fd9',
    950: '#000000',
  },
}

SCSS

$custom: #537fd9;
$custom-light: #8fa3e5;
$custom-dark: #000000;

JSON

{
  "hex": "#537fd9",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 217
  },
  "hsl": {
    "h": 220.299,
    "s": 63.81,
    "l": 58.824
  },
  "oklch": {
    "l": 0.60806,
    "c": 0.14544,
    "h": 263.1
  },
  "luminance": 0.22027
}

Semantic roles & 50–950 ramp

primary

#537FD9

secondary

#DECDAA

accent

#B041E7

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #537FD9

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

Preview Lab → · Contrast checker → · Palette generator →