#537FCB#537FCB

#537FCB is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.0% C 0.126 H 260.7°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#537FCB
RGB	rgb(83, 127, 203)
HSL	hsl(218, 54%, 56%)
HSV	hsv(218, 59%, 80%)
CMYK	cmyk(59.1%, 37.4%, 0%, 20.4%)
CIE-LAB	lab(53.31, 7.95, -43.97)
CIE-LCH	lch(53.31, 44.68, 280.24°)
OKLab	oklab(59.98% -0.0204 -0.1247)
OKLCH	oklch(59.98% 0.126 260.7)
XYZ	xyz(21.9324, 21.3277, 59.4492)
Luminance	0.2133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FCB #CB9F53

analogous

#53BBCB #537FCB #6353CB

triadic

#537FCB #CB537F #7FCB53

tetradic

#537FCB #CB53BB #CB9F53 #53CB63

square

#537FCB #CB53BB #CB9F53 #53CB63

split-complementary

#537FCB #CB6353 #BBCB53

monochromatic

#26467E #3460AD #537FCB #82A2D9 #B1C5E7

Accessibility & contrast

On white

3.99

#537FCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#537FCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FCB

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FCB	#FFFFFF	#000000	##000000
##537FCB	1.00	3.99	5.27	5.27
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F85CE

Deuteranopia (green-blind)

#4F7AC9

Tritanopia (blue-blind)

#00909B

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #537fcb;
/* rgb */ color: rgb(83, 127, 203);
/* oklch */ color: oklch(60.0% 0.126 260.7);

Tailwind

colors: {
  custom: {
    50: '#8da3db',
    500: '#537fcb',
    950: '#000000',
  },
}

SCSS

$custom: #537fcb;
$custom-light: #8da3db;
$custom-dark: #000000;

JSON

{
  "hex": "#537fcb",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 203
  },
  "hsl": {
    "h": 218,
    "s": 53.571,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59984,
    "c": 0.12634,
    "h": 260.7
  },
  "luminance": 0.2133
}

Semantic roles & 50–950 ramp

primary

#537FCB

secondary

#D6C4A4

accent

#A74BDD

background

#F9FAFD

surface

#F1F3FB

border

#CBCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #537FCB

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

Preview Lab → · Contrast checker → · Palette generator →