#537CD1#537CD1

#537CD1 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.7% C 0.138 H 263.4°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#537CD1
RGB	rgb(83, 124, 209)
HSL	hsl(220, 58%, 57%)
HSV	hsv(220, 60%, 82%)
CMYK	cmyk(60.3%, 40.7%, 0%, 18%)
CIE-LAB	lab(52.79, 11.78, -48.19)
CIE-LCH	lch(52.79, 49.61, 283.73°)
OKLab	oklab(59.69% -0.0159 -0.1371)
OKLCH	oklch(59.69% 0.138 263.4)
XYZ	xyz(22.2796, 20.8558, 63.1607)
Luminance	0.2086 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537CD1 #D1A853

analogous

#53BBD1 #537CD1 #6953D1

triadic

#537CD1 #D1537C #7CD153

tetradic

#537CD1 #D153BB #D1A853 #53D169

square

#537CD1 #D153BB #D1A853 #53D169

split-complementary

#537CD1 #D16953 #BBD153

monochromatic

#244486 #315CB6 #537CD1 #83A1DE #B4C6EB

Accessibility & contrast

On white

4.06

#537CD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#537CD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537CD1

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537CD1	#FFFFFF	#000000	##000000
##537CD1	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5784D4

Deuteranopia (green-blind)

#4579CF

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #537cd1;
/* rgb */ color: rgb(83, 124, 209);
/* oklch */ color: oklch(59.7% 0.138 263.4);

Tailwind

colors: {
  custom: {
    50: '#8ea1df',
    500: '#537cd1',
    950: '#000000',
  },
}

SCSS

$custom: #537cd1;
$custom-light: #8ea1df;
$custom-dark: #000000;

JSON

{
  "hex": "#537cd1",
  "rgb": {
    "r": 83,
    "g": 124,
    "b": 209
  },
  "hsl": {
    "h": 220.476,
    "s": 57.798,
    "l": 57.255
  },
  "oklch": {
    "l": 0.59689,
    "c": 0.13799,
    "h": 263.4
  },
  "luminance": 0.20858
}

Semantic roles & 50–950 ramp

primary

#537CD1

secondary

#D9C9A6

accent

#AF47E1

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #537CD1

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

Preview Lab → · Contrast checker → · Palette generator →