#3537B9#3537B9

#3537B9 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 43.0% C 0.198 H 273.6°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#3537B9
RGB	rgb(53, 55, 185)
HSL	hsl(239, 55%, 47%)
HSV	hsv(239, 71%, 73%)
CMYK	cmyk(71.4%, 70.3%, 0%, 27.5%)
CIE-LAB	lab(31.79, 41.96, -68.36)
CIE-LCH	lch(31.79, 80.21, 301.54°)
OKLab	oklab(42.95% 0.0124 -0.1977)
OKLCH	oklch(42.95% 0.198 273.6)
XYZ	xyz(11.5884, 6.9909, 46.6282)
Luminance	0.0699 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3537B9 #B9B735

analogous

#3579B9 #3537B9 #7535B9

triadic

#3537B9 #B93537 #37B935

tetradic

#3537B9 #B93579 #B9B735 #35B975

square

#3537B9 #B93579 #B9B735 #35B975

split-complementary

#3537B9 #B97535 #79B935

monochromatic

#1A1B5A #272989 #3537B9 #5B5DD0 #8B8CDE

Accessibility & contrast

On white

8.76

#3537B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#3537B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3537B9

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3537B9	#FFFFFF	#000000	##FFFFFF
##3537B9	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BD

Deuteranopia (green-blind)

#0045B7

Tritanopia (blue-blind)

#005B74

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3537b9;
/* rgb */ color: rgb(53, 55, 185);
/* oklch */ color: oklch(43.0% 0.198 273.6);

Tailwind

colors: {
  custom: {
    50: '#7f6fcf',
    500: '#3537b9',
    950: '#000000',
  },
}

SCSS

$custom: #3537b9;
$custom-light: #7f6fcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3537b9",
  "rgb": {
    "r": 53,
    "g": 55,
    "b": 185
  },
  "hsl": {
    "h": 239.091,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4295,
    "c": 0.19805,
    "h": 273.6
  },
  "luminance": 0.06992
}

Semantic roles & 50–950 ramp

primary

#3537B9

secondary

#C8C782

accent

#DD49DF

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3537B9

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

Preview Lab → · Contrast checker → · Palette generator →