#537EEB#537EEB

#537EEB is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.7% C 0.171 H 265.5°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#537EEB
RGB	rgb(83, 126, 235)
HSL	hsl(223, 79%, 62%)
HSV	hsv(223, 65%, 92%)
CMYK	cmyk(64.7%, 46.4%, 0%, 7.8%)
CIE-LAB	lab(54.82, 19.39, -59.56)
CIE-LCH	lch(54.82, 62.64, 288.03°)
OKLab	oklab(61.73% -0.0134 -0.1704)
OKLCH	oklch(61.73% 0.171 265.5)
XYZ	xyz(26.0183, 22.7564, 81.6024)
Luminance	0.2276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537EEB #EBC053

analogous

#53CAEB #537EEB #7453EB

triadic

#537EEB #EB537E #7EEB53

tetradic

#537EEB #EB53CA #EBC053 #53EB74

square

#537EEB #EB53CA #EBC053 #53EB74

split-complementary

#537EEB #EB7453 #CAEB53

monochromatic

#1440AF #1C55E5 #537EEB #8AA7F1 #C1D0F8

Accessibility & contrast

On white

3.78

#537EEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#537EEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537EEB

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537EEB	#FFFFFF	#000000	##000000
##537EEB	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#478BEF

Deuteranopia (green-blind)

#297DE9

Tritanopia (blue-blind)

#0097A9

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #537eeb;
/* rgb */ color: rgb(83, 126, 235);
/* oklch */ color: oklch(61.7% 0.171 265.5);

Tailwind

colors: {
  custom: {
    50: '#92a2f2',
    500: '#537eeb',
    950: '#000000',
  },
}

SCSS

$custom: #537eeb;
$custom-light: #92a2f2;
$custom-dark: #000000;

JSON

{
  "hex": "#537eeb",
  "rgb": {
    "r": 83,
    "g": 126,
    "b": 235
  },
  "hsl": {
    "h": 223.026,
    "s": 79.167,
    "l": 62.353
  },
  "oklch": {
    "l": 0.6173,
    "c": 0.17097,
    "h": 265.5
  },
  "luminance": 0.22759
}

Semantic roles & 50–950 ramp

primary

#537EEB

secondary

#E9D9B1

accent

#A00ADB

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #537EEB

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

Preview Lab → · Contrast checker → · Palette generator →