#537FDF#537FDF

#537FDF is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.2% C 0.154 H 263.9°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#537FDF
RGB	rgb(83, 127, 223)
HSL	hsl(221, 69%, 60%)
HSV	hsv(221, 63%, 87%)
CMYK	cmyk(62.8%, 43%, 0%, 12.5%)
CIE-LAB	lab(54.39, 14.68, -53.54)
CIE-LCH	lch(54.39, 55.52, 285.34°)
OKLab	oklab(61.17% -0.0163 -0.1527)
OKLCH	oklch(61.17% 0.154 263.9)
XYZ	xyz(24.4713, 22.3432, 72.8208)
Luminance	0.2235 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FDF #DFB353

analogous

#53C5DF #537FDF #6D53DF

triadic

#537FDF #DF537F #7FDF53

tetradic

#537FDF #DF53C5 #DFB353 #53DF6D

square

#537FDF #DF53C5 #DFB353 #53DF6D

split-complementary

#537FDF #DF6D53 #C5DF53

monochromatic

#1D449B #265BCE #537FDF #87A5E9 #BACCF2

Accessibility & contrast

On white

3.84

#537FDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#537FDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FDF

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FDF	#FFFFFF	#000000	##000000
##537FDF	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5289E3

Deuteranopia (green-blind)

#3D7CDD

Tritanopia (blue-blind)

#0095A4

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #537fdf;
/* rgb */ color: rgb(83, 127, 223);
/* oklch */ color: oklch(61.2% 0.154 263.9);

Tailwind

colors: {
  custom: {
    50: '#90a3e9',
    500: '#537fdf',
    950: '#000000',
  },
}

SCSS

$custom: #537fdf;
$custom-light: #90a3e9;
$custom-dark: #000000;

JSON

{
  "hex": "#537fdf",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 223
  },
  "hsl": {
    "h": 221.143,
    "s": 68.627,
    "l": 60
  },
  "oklch": {
    "l": 0.61173,
    "c": 0.1536,
    "h": 263.9
  },
  "luminance": 0.22345
}

Semantic roles & 50–950 ramp

primary

#537FDF

secondary

#E2D1AC

accent

#B43CEB

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #537FDF

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

Preview Lab → · Contrast checker → · Palette generator →