#537CF0#537CF0

#537CF0 is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.7% C 0.180 H 266.5°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#537CF0
RGB	rgb(83, 124, 240)
HSL	hsl(224, 84%, 63%)
HSV	hsv(224, 65%, 94%)
CMYK	cmyk(65.4%, 48.3%, 0%, 5.9%)
CIE-LAB	lab(54.60, 22.33, -62.70)
CIE-LCH	lch(54.60, 66.56, 289.60°)
OKLab	oklab(61.66% -0.0109 -0.1797)
OKLCH	oklch(61.66% 0.18 266.5)
XYZ	xyz(26.4977, 22.5431, 85.3760)
Luminance	0.2255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537CF0 #F0C753

analogous

#53CAF0 #537CF0 #7853F0

triadic

#537CF0 #F0537C #7CF053

tetradic

#537CF0 #F053CA #F0C753 #53F078

square

#537CF0 #F053CA #F0C753 #53F078

split-complementary

#537CF0 #F07853 #CAF053

monochromatic

#103CB9 #1B51EB #537CF0 #8BA7F5 #C4D2FA

Accessibility & contrast

On white

3.81

#537CF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#537CF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537CF0

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537CF0	#FFFFFF	#000000	##000000
##537CF0	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D8AF4

Deuteranopia (green-blind)

#137CEE

Tritanopia (blue-blind)

#0097AA

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #537cf0;
/* rgb */ color: rgb(83, 124, 240);
/* oklch */ color: oklch(61.7% 0.180 266.5);

Tailwind

colors: {
  custom: {
    50: '#93a1f6',
    500: '#537cf0',
    950: '#000000',
  },
}

SCSS

$custom: #537cf0;
$custom-light: #93a1f6;
$custom-dark: #000000;

JSON

{
  "hex": "#537cf0",
  "rgb": {
    "r": 83,
    "g": 124,
    "b": 240
  },
  "hsl": {
    "h": 224.331,
    "s": 83.957,
    "l": 63.333
  },
  "oklch": {
    "l": 0.61658,
    "c": 0.18003,
    "h": 266.5
  },
  "luminance": 0.22546
}

Semantic roles & 50–950 ramp

primary

#537CF0

secondary

#EBDDB3

accent

#A705E0

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #537CF0

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

Preview Lab → · Contrast checker → · Palette generator →