#537DE4#537DE4

#537DE4 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.1% C 0.163 H 265.2°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#537DE4
RGB	rgb(83, 125, 228)
HSL	hsl(223, 73%, 61%)
HSV	hsv(223, 64%, 89%)
CMYK	cmyk(63.6%, 45.2%, 0%, 10.6%)
CIE-LAB	lab(54.14, 17.61, -56.75)
CIE-LCH	lch(54.14, 59.41, 287.24°)
OKLab	oklab(61.07% -0.0135 -0.1622)
OKLCH	oklch(61.07% 0.163 265.2)
XYZ	xyz(24.8996, 22.1054, 76.3383)
Luminance	0.2211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537DE4 #E4BA53

analogous

#53C5E4 #537DE4 #7153E4

triadic

#537DE4 #E4537D #7DE453

tetradic

#537DE4 #E453C5 #E4BA53 #53E471

square

#537DE4 #E453C5 #E4BA53 #53E471

split-complementary

#537DE4 #E47153 #C5E453

monochromatic

#1A41A3 #2257D8 #537DE4 #88A5EC #BDCDF5

Accessibility & contrast

On white

3.87

#537DE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#537DE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537DE4

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537DE4	#FFFFFF	#000000	##000000
##537DE4	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B88E8

Deuteranopia (green-blind)

#327BE2

Tritanopia (blue-blind)

#0095A5

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #537de4;
/* rgb */ color: rgb(83, 125, 228);
/* oklch */ color: oklch(61.1% 0.163 265.2);

Tailwind

colors: {
  custom: {
    50: '#91a2ed',
    500: '#537de4',
    950: '#000000',
  },
}

SCSS

$custom: #537de4;
$custom-light: #91a2ed;
$custom-dark: #000000;

JSON

{
  "hex": "#537de4",
  "rgb": {
    "r": 83,
    "g": 125,
    "b": 228
  },
  "hsl": {
    "h": 222.621,
    "s": 72.864,
    "l": 60.98
  },
  "oklch": {
    "l": 0.61074,
    "c": 0.16273,
    "h": 265.2
  },
  "luminance": 0.22108
}

Semantic roles & 50–950 ramp

primary

#537DE4

secondary

#E5D5AE

accent

#9C11D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #537DE4

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

Preview Lab → · Contrast checker → · Palette generator →