#537BD9#537BD9

#537BD9 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 60.0% C 0.150 H 264.9°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#537BD9
RGB	rgb(83, 123, 217)
HSL	hsl(222, 64%, 59%)
HSV	hsv(222, 62%, 85%)
CMYK	cmyk(61.8%, 43.3%, 0%, 14.9%)
CIE-LAB	lab(52.96, 15.09, -52.44)
CIE-LCH	lch(52.96, 54.57, 286.05°)
OKLab	oklab(59.97% -0.0134 -0.1495)
OKLCH	oklch(59.97% 0.15 264.9)
XYZ	xyz(23.1703, 21.0126, 68.4670)
Luminance	0.2102 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BD9 #D9B153

analogous

#53BED9 #537BD9 #6E53D9

triadic

#537BD9 #D9537B #7BD953

tetradic

#537BD9 #D953BE #D9B153 #53D96E

square

#537BD9 #D953BE #D9B153 #53D96E

split-complementary

#537BD9 #D96E53 #BED953

monochromatic

#204291 #2B59C4 #537BD9 #85A1E4 #B7C8EF

Accessibility & contrast

On white

4.04

#537BD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#537BD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BD9

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BD9	#FFFFFF	#000000	##000000
##537BD9	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5085DD

Deuteranopia (green-blind)

#3B79D7

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #537bd9;
/* rgb */ color: rgb(83, 123, 217);
/* oklch */ color: oklch(60.0% 0.150 264.9);

Tailwind

colors: {
  custom: {
    50: '#8fa0e5',
    500: '#537bd9',
    950: '#000000',
  },
}

SCSS

$custom: #537bd9;
$custom-light: #8fa0e5;
$custom-dark: #000000;

JSON

{
  "hex": "#537bd9",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 217
  },
  "hsl": {
    "h": 222.09,
    "s": 63.81,
    "l": 58.824
  },
  "oklch": {
    "l": 0.59966,
    "c": 0.15015,
    "h": 264.9
  },
  "luminance": 0.21015
}

Semantic roles & 50–950 ramp

primary

#537BD9

secondary

#DECFAA

accent

#B541E7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #537BD9

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

Preview Lab → · Contrast checker → · Palette generator →