#537AD9#537AD9

#537AD9 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.8% C 0.151 H 265.3°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#537AD9
RGB	rgb(83, 122, 217)
HSL	hsl(223, 64%, 59%)
HSV	hsv(223, 62%, 85%)
CMYK	cmyk(61.8%, 43.8%, 0%, 14.9%)
CIE-LAB	lab(52.69, 15.70, -52.88)
CIE-LCH	lch(52.69, 55.16, 286.54°)
OKLab	oklab(59.76% -0.0124 -0.1508)
OKLCH	oklch(59.76% 0.151 265.3)
XYZ	xyz(23.0469, 20.7658, 68.4258)
Luminance	0.2077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537AD9 #D9B253

analogous

#53BDD9 #537AD9 #6F53D9

triadic

#537AD9 #D9537A #7AD953

tetradic

#537AD9 #D953BD #D9B253 #53D96F

square

#537AD9 #D953BD #D9B253 #53D96F

split-complementary

#537AD9 #D96F53 #BDD953

monochromatic

#204191 #2B58C4 #537AD9 #85A1E4 #B7C8EF

Accessibility & contrast

On white

4.07

#537AD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#537AD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537AD9

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537AD9	#FFFFFF	#000000	##000000
##537AD9	1.00	4.07	5.15	5.15
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E84DD

Deuteranopia (green-blind)

#3978D7

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #537ad9;
/* rgb */ color: rgb(83, 122, 217);
/* oklch */ color: oklch(59.8% 0.151 265.3);

Tailwind

colors: {
  custom: {
    50: '#8fa0e5',
    500: '#537ad9',
    950: '#000000',
  },
}

SCSS

$custom: #537ad9;
$custom-light: #8fa0e5;
$custom-dark: #000000;

JSON

{
  "hex": "#537ad9",
  "rgb": {
    "r": 83,
    "g": 122,
    "b": 217
  },
  "hsl": {
    "h": 222.537,
    "s": 63.81,
    "l": 58.824
  },
  "oklch": {
    "l": 0.59758,
    "c": 0.15134,
    "h": 265.3
  },
  "luminance": 0.20768
}

Semantic roles & 50–950 ramp

primary

#537AD9

secondary

#DECFAA

accent

#B741E7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #537AD9

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

Preview Lab → · Contrast checker → · Palette generator →