#537CD3#537CD3

#537CD3 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.8% C 0.141 H 263.7°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#537CD3
RGB	rgb(83, 124, 211)
HSL	hsl(221, 59%, 58%)
HSV	hsv(221, 61%, 83%)
CMYK	cmyk(60.7%, 41.2%, 0%, 17.3%)
CIE-LAB	lab(52.90, 12.45, -49.15)
CIE-LCH	lch(52.90, 50.70, 284.21°)
OKLab	oklab(59.81% -0.0155 -0.1399)
OKLCH	oklch(59.81% 0.141 263.7)
XYZ	xyz(22.5287, 20.9555, 64.4730)
Luminance	0.2096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537CD3 #D3AA53

analogous

#53BCD3 #537CD3 #6A53D3

triadic

#537CD3 #D3537C #7CD353

tetradic

#537CD3 #D353BC #D3AA53 #53D36A

square

#537CD3 #D353BC #D3AA53 #53D36A

split-complementary

#537CD3 #D36A53 #BCD353

monochromatic

#234489 #2F5CB9 #537CD3 #84A1DF #B4C6EC

Accessibility & contrast

On white

4.05

#537CD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#537CD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537CD3

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537CD3	#FFFFFF	#000000	##000000
##537CD3	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5585D6

Deuteranopia (green-blind)

#4379D1

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #537cd3;
/* rgb */ color: rgb(83, 124, 211);
/* oklch */ color: oklch(59.8% 0.141 263.7);

Tailwind

colors: {
  custom: {
    50: '#8ea1e1',
    500: '#537cd3',
    950: '#000000',
  },
}

SCSS

$custom: #537cd3;
$custom-light: #8ea1e1;
$custom-dark: #000000;

JSON

{
  "hex": "#537cd3",
  "rgb": {
    "r": 83,
    "g": 124,
    "b": 211
  },
  "hsl": {
    "h": 220.781,
    "s": 59.259,
    "l": 57.647
  },
  "oklch": {
    "l": 0.59809,
    "c": 0.14074,
    "h": 263.7
  },
  "luminance": 0.20957
}

Semantic roles & 50–950 ramp

primary

#537CD3

secondary

#DBCAA7

accent

#B045E2

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #537CD3

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

Preview Lab → · Contrast checker → · Palette generator →