#537DDF#537DDF

#537DDF is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.8% C 0.156 H 264.7°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#537DDF
RGB	rgb(83, 125, 223)
HSL	hsl(222, 69%, 60%)
HSV	hsv(222, 63%, 87%)
CMYK	cmyk(62.8%, 43.9%, 0%, 12.5%)
CIE-LAB	lab(53.85, 15.90, -54.41)
CIE-LCH	lch(53.85, 56.68, 286.29°)
OKLab	oklab(60.76% -0.0143 -0.1553)
OKLCH	oklch(60.76% 0.156 264.7)
XYZ	xyz(24.2156, 21.8317, 72.7355)
Luminance	0.2183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537DDF #DFB553

analogous

#53C3DF #537DDF #6F53DF

triadic

#537DDF #DF537D #7DDF53

tetradic

#537DDF #DF53C3 #DFB553 #53DF6F

square

#537DDF #DF53C3 #DFB553 #53DF6F

split-complementary

#537DDF #DF6F53 #C3DF53

monochromatic

#1D439B #2659CE #537DDF #87A4E9 #BACBF2

Accessibility & contrast

On white

3.91

#537DDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#537DDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537DDF

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537DDF	#FFFFFF	#000000	##000000
##537DDF	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F88E3

Deuteranopia (green-blind)

#387BDD

Tritanopia (blue-blind)

#0093A3

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #537ddf;
/* rgb */ color: rgb(83, 125, 223);
/* oklch */ color: oklch(60.8% 0.156 264.7);

Tailwind

colors: {
  custom: {
    50: '#90a2e9',
    500: '#537ddf',
    950: '#000000',
  },
}

SCSS

$custom: #537ddf;
$custom-light: #90a2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#537ddf",
  "rgb": {
    "r": 83,
    "g": 125,
    "b": 223
  },
  "hsl": {
    "h": 222,
    "s": 68.627,
    "l": 60
  },
  "oklch": {
    "l": 0.60757,
    "c": 0.15595,
    "h": 264.7
  },
  "luminance": 0.21834
}

Semantic roles & 50–950 ramp

primary

#537DDF

secondary

#E2D2AC

accent

#B73CEB

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #537DDF

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

Preview Lab → · Contrast checker → · Palette generator →