#537DDB#537DDB

#537DDB is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.5% C 0.151 H 264.3°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#537DDB
RGB	rgb(83, 125, 219)
HSL	hsl(221, 65%, 59%)
HSV	hsv(221, 62%, 86%)
CMYK	cmyk(62.1%, 42.9%, 0%, 14.1%)
CIE-LAB	lab(53.62, 14.54, -52.52)
CIE-LCH	lch(53.62, 54.50, 285.48°)
OKLab	oklab(60.51% -0.015 -0.1498)
OKLCH	oklch(60.51% 0.151 264.3)
XYZ	xyz(23.6826, 21.6186, 69.9289)
Luminance	0.2162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537DDB #DBB153

analogous

#53C1DB #537DDB #6D53DB

triadic

#537DDB #DB537D #7DDB53

tetradic

#537DDB #DB53C1 #DBB153 #53DB6D

square

#537DDB #DB53C1 #DBB153 #53DB6D

split-complementary

#537DDB #DB6D53 #C1DB53

monochromatic

#1F4395 #2A5AC7 #537DDB #86A3E6 #B8CAF0

Accessibility & contrast

On white

3.94

#537DDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#537DDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537DDB

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537DDB	#FFFFFF	#000000	##000000
##537DDB	1.00	3.94	5.32	5.32
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5287DF

Deuteranopia (green-blind)

#3D7AD9

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #537ddb;
/* rgb */ color: rgb(83, 125, 219);
/* oklch */ color: oklch(60.5% 0.151 264.3);

Tailwind

colors: {
  custom: {
    50: '#8fa2e7',
    500: '#537ddb',
    950: '#000000',
  },
}

SCSS

$custom: #537ddb;
$custom-light: #8fa2e7;
$custom-dark: #000000;

JSON

{
  "hex": "#537ddb",
  "rgb": {
    "r": 83,
    "g": 125,
    "b": 219
  },
  "hsl": {
    "h": 221.471,
    "s": 65.385,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60508,
    "c": 0.15051,
    "h": 264.3
  },
  "luminance": 0.21621
}

Semantic roles & 50–950 ramp

primary

#537DDB

secondary

#DFCFAA

accent

#B43FE8

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0F16

muted

#7E7E84

Preview Lab

Preview with #537DDB

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

Preview Lab → · Contrast checker → · Palette generator →