#537BF3#537BF3

#537BF3 is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.7% C 0.185 H 267.0°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#537BF3
RGB	rgb(83, 123, 243)
HSL	hsl(225, 87%, 64%)
HSV	hsv(225, 66%, 95%)
CMYK	cmyk(65.8%, 49.4%, 0%, 4.7%)
CIE-LAB	lab(54.53, 23.97, -64.49)
CIE-LCH	lch(54.53, 68.80, 290.39°)
OKLab	oklab(61.66% -0.0097 -0.185)
OKLCH	oklch(61.66% 0.185 267)
XYZ	xyz(26.8223, 22.4734, 87.7009)
Luminance	0.2248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BF3 #F3CB53

analogous

#53CBF3 #537BF3 #7B53F3

triadic

#537BF3 #F3537B #7BF353

tetradic

#537BF3 #F353CB #F3CB53 #53F37B

square

#537BF3 #F353CB #F3CB53 #53F37B

split-complementary

#537BF3 #F37B53 #CBF353

monochromatic

#0D3ABE #1A4FEF #537BF3 #8CA7F7 #C5D3FB

Accessibility & contrast

On white

3.82

#537BF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#537BF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BF3

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BF3	#FFFFFF	#000000	##000000
##537BF3	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#378AF7

Deuteranopia (green-blind)

#007CF1

Tritanopia (blue-blind)

#0097AB

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #537bf3;
/* rgb */ color: rgb(83, 123, 243);
/* oklch */ color: oklch(61.7% 0.185 267.0);

Tailwind

colors: {
  custom: {
    50: '#93a0f8',
    500: '#537bf3',
    950: '#000000',
  },
}

SCSS

$custom: #537bf3;
$custom-light: #93a0f8;
$custom-dark: #000000;

JSON

{
  "hex": "#537bf3",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 243
  },
  "hsl": {
    "h": 225,
    "s": 86.957,
    "l": 63.922
  },
  "oklch": {
    "l": 0.61663,
    "c": 0.18522,
    "h": 267
  },
  "luminance": 0.22476
}

Semantic roles & 50–950 ramp

primary

#537BF3

secondary

#EDDFB5

accent

#AB02E4

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #537BF3

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

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