#3F52BE#3F52BE

#3F52BE is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.7% C 0.170 H 271.1°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F52BE
RGB	rgb(63, 82, 190)
HSL	hsl(231, 50%, 50%)
HSV	hsv(231, 67%, 75%)
CMYK	cmyk(66.8%, 56.8%, 0%, 25.5%)
CIE-LAB	lab(39.25, 28.13, -59.07)
CIE-LCH	lch(39.25, 65.42, 295.46°)
OKLab	oklab(48.72% 0.0034 -0.17)
OKLCH	oklch(48.72% 0.17 271.1)
XYZ	xyz(14.3583, 10.8077, 50.0346)
Luminance	0.1081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52BE #BEAB3F

analogous

#3F91BE #3F52BE #6C3FBE

triadic

#3F52BE #BE3F52 #52BE3F

tetradic

#3F52BE #BE3F91 #BEAB3F #3FBE6C

square

#3F52BE #BE3F91 #BEAB3F #3FBE6C

split-complementary

#3F52BE #BE6C3F #91BE3F

monochromatic

#212A62 #303E90 #3F52BE #6C7BCE #9AA4DD

Accessibility & contrast

On white

6.64

#3F52BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3F52BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52BE

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52BE	#FFFFFF	#000000	##FFFFFF
##3F52BE	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C2

Deuteranopia (green-blind)

#0057BC

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f52be;
/* rgb */ color: rgb(63, 82, 190);
/* oklch */ color: oklch(48.7% 0.170 271.1);

Tailwind

colors: {
  custom: {
    50: '#8382d2',
    500: '#3f52be',
    950: '#000000',
  },
}

SCSS

$custom: #3f52be;
$custom-light: #8382d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52be",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 190
  },
  "hsl": {
    "h": 231.024,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.48718,
    "c": 0.17003,
    "h": 271.1
  },
  "luminance": 0.10809
}

Semantic roles & 50–950 ramp

primary

#3F52BE

secondary

#C9C18F

accent

#C54EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F52BE

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

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