#537BCB#537BCB

#537BCB is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.131 H 262.9°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#537BCB
RGB	rgb(83, 123, 203)
HSL	hsl(220, 54%, 56%)
HSV	hsv(220, 59%, 80%)
CMYK	cmyk(59.1%, 39.4%, 0%, 20.4%)
CIE-LAB	lab(52.19, 10.37, -45.74)
CIE-LCH	lch(52.19, 46.90, 282.78°)
OKLab	oklab(59.12% -0.0161 -0.1299)
OKLCH	oklch(59.12% 0.131 262.9)
XYZ	xyz(21.4260, 20.3149, 59.2804)
Luminance	0.2032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BCB #CBA353

analogous

#53B7CB #537BCB #6753CB

triadic

#537BCB #CB537B #7BCB53

tetradic

#537BCB #CB53B7 #CBA353 #53CB67

square

#537BCB #CB53B7 #CBA353 #53CB67

split-complementary

#537BCB #CB6753 #B7CB53

monochromatic

#26437E #345CAD #537BCB #829FD9 #B1C3E7

Accessibility & contrast

On white

4.15

#537BCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#537BCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BCB

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BCB	#FFFFFF	#000000	##000000
##537BCB	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5982CE

Deuteranopia (green-blind)

#4977C9

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #537bcb;
/* rgb */ color: rgb(83, 123, 203);
/* oklch */ color: oklch(59.1% 0.131 262.9);

Tailwind

colors: {
  custom: {
    50: '#8da0db',
    500: '#537bcb',
    950: '#000000',
  },
}

SCSS

$custom: #537bcb;
$custom-light: #8da0db;
$custom-dark: #000000;

JSON

{
  "hex": "#537bcb",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 203
  },
  "hsl": {
    "h": 220,
    "s": 53.571,
    "l": 56.078
  },
  "oklch": {
    "l": 0.5912,
    "c": 0.13088,
    "h": 262.9
  },
  "luminance": 0.20317
}

Semantic roles & 50–950 ramp

primary

#537BCB

secondary

#D6C5A4

accent

#AC4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #537BCB

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

Preview Lab → · Contrast checker → · Palette generator →