#537FC9#537FC9

#537FC9 is a mid, vivid blue. Relative luminance 0.212; OKLCH L 59.9% C 0.124 H 260.3°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#537FC9
RGB	rgb(83, 127, 201)
HSL	hsl(218, 52%, 56%)
HSV	hsv(218, 59%, 79%)
CMYK	cmyk(58.7%, 36.8%, 0%, 21.2%)
CIE-LAB	lab(53.20, 7.28, -43.00)
CIE-LCH	lch(53.20, 43.61, 279.61°)
OKLab	oklab(59.87% -0.0209 -0.1218)
OKLCH	oklch(59.87% 0.124 260.3)
XYZ	xyz(21.6956, 21.2329, 58.2021)
Luminance	0.2124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537FC9 #C99D53

analogous

#53BAC9 #537FC9 #6253C9

triadic

#537FC9 #C9537F #7FC953

tetradic

#537FC9 #C953BA #C99D53 #53C962

square

#537FC9 #C953BA #C99D53 #53C962

split-complementary

#537FC9 #C96253 #BAC953

monochromatic

#27467B #3561AA #537FC9 #82A2D8 #B0C4E6

Accessibility & contrast

On white

4.00

#537FC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#537FC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537FC9

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537FC9	#FFFFFF	#000000	##000000
##537FC9	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6085CC

Deuteranopia (green-blind)

#517AC7

Tritanopia (blue-blind)

#00909A

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #537fc9;
/* rgb */ color: rgb(83, 127, 201);
/* oklch */ color: oklch(59.9% 0.124 260.3);

Tailwind

colors: {
  custom: {
    50: '#8ca3da',
    500: '#537fc9',
    950: '#000000',
  },
}

SCSS

$custom: #537fc9;
$custom-light: #8ca3da;
$custom-dark: #000000;

JSON

{
  "hex": "#537fc9",
  "rgb": {
    "r": 83,
    "g": 127,
    "b": 201
  },
  "hsl": {
    "h": 217.627,
    "s": 52.212,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59871,
    "c": 0.12361,
    "h": 260.3
  },
  "luminance": 0.21235
}

Semantic roles & 50–950 ramp

primary

#537FC9

secondary

#D4C2A3

accent

#A64CDC

background

#F9FAFD

surface

#F1F3FA

border

#CBCDD3

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #537FC9

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

Preview Lab → · Contrast checker → · Palette generator →