#537FDD#537FDD

#537FDD is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.1% C 0.151 H 263.7°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#537FDD
RGB	rgb(83, 127, 221)
HSL	hsl(221, 67%, 60%)
HSV	hsv(221, 62%, 87%)
CMYK	cmyk(62.4%, 42.5%, 0%, 13.3%)
CIE-LAB	lab(54.28, 14.00, -52.60)
CIE-LCH	lch(54.28, 54.43, 284.91°)
OKLab	oklab(61.05% -0.0167 -0.15)
OKLCH	oklch(61.05% 0.151 263.7)
XYZ	xyz(24.2033, 22.2360, 71.4091)
Luminance	0.2224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FDD #DDB153

analogous

#53C4DD #537FDD #6C53DD

triadic

#537FDD #DD537F #7FDD53

tetradic

#537FDD #DD53C4 #DDB153 #53DD6C

square

#537FDD #DD53C4 #DDB153 #53DD6C

split-complementary

#537FDD #DD6C53 #C4DD53

monochromatic

#1E4598 #285CCB #537FDD #86A5E7 #B9CBF1

Accessibility & contrast

On white

3.85

#537FDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#537FDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FDD

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FDD	#FFFFFF	#000000	##000000
##537FDD	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5489E1

Deuteranopia (green-blind)

#3F7CDB

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #537fdd;
/* rgb */ color: rgb(83, 127, 221);
/* oklch */ color: oklch(61.1% 0.151 263.7);

Tailwind

colors: {
  custom: {
    50: '#8fa3e8',
    500: '#537fdd',
    950: '#000000',
  },
}

SCSS

$custom: #537fdd;
$custom-light: #8fa3e8;
$custom-dark: #000000;

JSON

{
  "hex": "#537fdd",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 221
  },
  "hsl": {
    "h": 220.87,
    "s": 66.99,
    "l": 59.608
  },
  "oklch": {
    "l": 0.6105,
    "c": 0.15088,
    "h": 263.7
  },
  "luminance": 0.22238
}

Semantic roles & 50–950 ramp

primary

#537FDD

secondary

#E1D0AB

accent

#B33EEA

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #537FDD

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

Preview Lab → · Contrast checker → · Palette generator →