#537BE3#537BE3

#537BE3 is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.6% C 0.164 H 265.9°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#537BE3
RGB	rgb(83, 123, 227)
HSL	hsl(223, 72%, 61%)
HSV	hsv(223, 63%, 89%)
CMYK	cmyk(63.4%, 45.8%, 0%, 11%)
CIE-LAB	lab(53.54, 18.49, -57.14)
CIE-LCH	lch(53.54, 60.05, 287.93°)
OKLab	oklab(60.6% -0.0118 -0.1633)
OKLCH	oklch(60.6% 0.164 265.9)
XYZ	xyz(24.5106, 21.5487, 75.5258)
Luminance	0.2155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BE3 #E3BB53

analogous

#53C3E3 #537BE3 #7353E3

triadic

#537BE3 #E3537B #7BE353

tetradic

#537BE3 #E353C3 #E3BB53 #53E373

square

#537BE3 #E353C3 #E3BB53 #53E373

split-complementary

#537BE3 #E37353 #C3E353

monochromatic

#1A40A1 #2355D6 #537BE3 #88A3EC #BCCCF4

Accessibility & contrast

On white

3.95

#537BE3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#537BE3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BE3

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BE3	#FFFFFF	#000000	##000000
##537BE3	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4887E7

Deuteranopia (green-blind)

#2E7AE1

Tritanopia (blue-blind)

#0093A4

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #537be3;
/* rgb */ color: rgb(83, 123, 227);
/* oklch */ color: oklch(60.6% 0.164 265.9);

Tailwind

colors: {
  custom: {
    50: '#91a0ec',
    500: '#537be3',
    950: '#000000',
  },
}

SCSS

$custom: #537be3;
$custom-light: #91a0ec;
$custom-dark: #000000;

JSON

{
  "hex": "#537be3",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 227
  },
  "hsl": {
    "h": 223.333,
    "s": 72,
    "l": 60.784
  },
  "oklch": {
    "l": 0.606,
    "c": 0.16376,
    "h": 265.9
  },
  "luminance": 0.21551
}

Semantic roles & 50–950 ramp

primary

#537BE3

secondary

#E4D5AE

accent

#9E11D4

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #537BE3

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

Preview Lab → · Contrast checker → · Palette generator →