#537ED9#537ED9

#537ED9 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.6% C 0.147 H 263.6°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#537ED9
RGB	rgb(83, 126, 217)
HSL	hsl(221, 64%, 59%)
HSV	hsv(221, 62%, 85%)
CMYK	cmyk(61.8%, 41.9%, 0%, 14.9%)
CIE-LAB	lab(53.78, 13.26, -51.14)
CIE-LCH	lch(53.78, 52.83, 284.53°)
OKLab	oklab(60.6% -0.0164 -0.1457)
OKLCH	oklch(60.6% 0.147 263.6)
XYZ	xyz(23.5482, 21.7684, 68.5929)
Luminance	0.2177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537ED9 #D9AE53

analogous

#53C1D9 #537ED9 #6B53D9

triadic

#537ED9 #D9537E #7ED953

tetradic

#537ED9 #D953C1 #D9AE53 #53D96B

square

#537ED9 #D953C1 #D9AE53 #53D96B

split-complementary

#537ED9 #D96B53 #C1D953

monochromatic

#204591 #2B5CC4 #537ED9 #85A4E4 #B7C9EF

Accessibility & contrast

On white

3.92

#537ED9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#537ED9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537ED9

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537ED9	#FFFFFF	#000000	##000000
##537ED9	1.00	3.92	5.35	5.35
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5587DD

Deuteranopia (green-blind)

#417BD7

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #537ed9;
/* rgb */ color: rgb(83, 126, 217);
/* oklch */ color: oklch(60.6% 0.147 263.6);

Tailwind

colors: {
  custom: {
    50: '#8fa2e5',
    500: '#537ed9',
    950: '#000000',
  },
}

SCSS

$custom: #537ed9;
$custom-light: #8fa2e5;
$custom-dark: #000000;

JSON

{
  "hex": "#537ed9",
  "rgb": {
    "r": 83,
    "g": 126,
    "b": 217
  },
  "hsl": {
    "h": 220.746,
    "s": 63.81,
    "l": 58.824
  },
  "oklch": {
    "l": 0.60595,
    "c": 0.14661,
    "h": 263.6
  },
  "luminance": 0.2177
}

Semantic roles & 50–950 ramp

primary

#537ED9

secondary

#DECDAA

accent

#B241E7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #537ED9

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

Preview Lab → · Contrast checker → · Palette generator →