#537DDD#537DDD

#537DDD is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.6% C 0.153 H 264.5°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#537DDD
RGB	rgb(83, 125, 221)
HSL	hsl(222, 67%, 60%)
HSV	hsv(222, 62%, 87%)
CMYK	cmyk(62.4%, 43.4%, 0%, 13.3%)
CIE-LAB	lab(53.73, 15.22, -53.47)
CIE-LCH	lch(53.73, 55.59, 285.89°)
OKLab	oklab(60.63% -0.0147 -0.1525)
OKLCH	oklch(60.63% 0.153 264.5)
XYZ	xyz(23.9475, 21.7245, 71.3238)
Luminance	0.2173 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537DDD #DDB353

analogous

#53C2DD #537DDD #6E53DD

triadic

#537DDD #DD537D #7DDD53

tetradic

#537DDD #DD53C2 #DDB353 #53DD6E

square

#537DDD #DD53C2 #DDB353 #53DD6E

split-complementary

#537DDD #DD6E53 #C2DD53

monochromatic

#1E4398 #285ACB #537DDD #86A4E7 #B9CAF1

Accessibility & contrast

On white

3.93

#537DDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#537DDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537DDD

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537DDD	#FFFFFF	#000000	##000000
##537DDD	1.00	3.93	5.35	5.35
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5087E1

Deuteranopia (green-blind)

#3B7BDB

Tritanopia (blue-blind)

#0093A2

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #537ddd;
/* rgb */ color: rgb(83, 125, 221);
/* oklch */ color: oklch(60.6% 0.153 264.5);

Tailwind

colors: {
  custom: {
    50: '#90a2e8',
    500: '#537ddd',
    950: '#000000',
  },
}

SCSS

$custom: #537ddd;
$custom-light: #90a2e8;
$custom-dark: #000000;

JSON

{
  "hex": "#537ddd",
  "rgb": {
    "r": 83,
    "g": 125,
    "b": 221
  },
  "hsl": {
    "h": 221.739,
    "s": 66.99,
    "l": 59.608
  },
  "oklch": {
    "l": 0.60632,
    "c": 0.15324,
    "h": 264.5
  },
  "luminance": 0.21727
}

Semantic roles & 50–950 ramp

primary

#537DDD

secondary

#E1D0AB

accent

#B63EEA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #537DDD

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

Preview Lab → · Contrast checker → · Palette generator →