#537BC9#537BC9

#537BC9 is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.0% C 0.128 H 262.6°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#537BC9
RGB	rgb(83, 123, 201)
HSL	hsl(220, 52%, 56%)
HSV	hsv(220, 59%, 79%)
CMYK	cmyk(58.7%, 38.8%, 0%, 21.2%)
CIE-LAB	lab(52.09, 9.71, -44.77)
CIE-LCH	lch(52.09, 45.81, 282.23°)
OKLab	oklab(59% -0.0165 -0.127)
OKLCH	oklch(59% 0.128 262.6)
XYZ	xyz(21.1892, 20.2202, 58.0333)
Luminance	0.2022 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BC9 #C9A153

analogous

#53B6C9 #537BC9 #6653C9

triadic

#537BC9 #C9537B #7BC953

tetradic

#537BC9 #C953B6 #C9A153 #53C966

square

#537BC9 #C953B6 #C9A153 #53C966

split-complementary

#537BC9 #C96653 #B6C953

monochromatic

#27437B #355DAA #537BC9 #829FD8 #B0C2E6

Accessibility & contrast

On white

4.16

#537BC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#537BC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BC9

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BC9	#FFFFFF	#000000	##000000
##537BC9	1.00	4.16	5.04	5.04
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A82CC

Deuteranopia (green-blind)

#4A77C7

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #537bc9;
/* rgb */ color: rgb(83, 123, 201);
/* oklch */ color: oklch(59.0% 0.128 262.6);

Tailwind

colors: {
  custom: {
    50: '#8da0da',
    500: '#537bc9',
    950: '#000000',
  },
}

SCSS

$custom: #537bc9;
$custom-light: #8da0da;
$custom-dark: #000000;

JSON

{
  "hex": "#537bc9",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 201
  },
  "hsl": {
    "h": 219.661,
    "s": 52.212,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59003,
    "c": 0.12812,
    "h": 262.6
  },
  "luminance": 0.20222
}

Semantic roles & 50–950 ramp

primary

#537BC9

secondary

#D4C4A3

accent

#AB4CDC

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #537BC9

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

Preview Lab → · Contrast checker → · Palette generator →