#3F52BF#3F52BF

#3F52BF is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.8% C 0.171 H 271.1°. Best body text is #FFFFFF at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#3F52BF
RGB	rgb(63, 82, 191)
HSL	hsl(231, 50%, 50%)
HSV	hsv(231, 67%, 75%)
CMYK	cmyk(67%, 57.1%, 0%, 25.1%)
CIE-LAB	lab(39.33, 28.48, -59.53)
CIE-LCH	lch(39.33, 65.99, 295.57°)
OKLab	oklab(48.8% 0.0034 -0.1714)
OKLCH	oklch(48.8% 0.171 271.1)
XYZ	xyz(14.4680, 10.8516, 50.6122)
Luminance	0.1085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52BF #BFAC3F

analogous

#3F92BF #3F52BF #6C3FBF

triadic

#3F52BF #BF3F52 #52BF3F

tetradic

#3F52BF #BF3F92 #BFAC3F #3FBF6C

square

#3F52BF #BF3F92 #BFAC3F #3FBF6C

split-complementary

#3F52BF #BF6C3F #92BF3F

monochromatic

#212A63 #303E91 #3F52BF #6D7BCF #9BA5DE

Accessibility & contrast

On white

6.62

#3F52BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#3F52BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52BF

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52BF	#FFFFFF	#000000	##FFFFFF
##3F52BF	1.00	6.62	3.17	6.62
#FFFFFF	6.62	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C3

Deuteranopia (green-blind)

#0057BD

Tritanopia (blue-blind)

#006D80

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f52bf;
/* rgb */ color: rgb(63, 82, 191);
/* oklch */ color: oklch(48.8% 0.171 271.1);

Tailwind

colors: {
  custom: {
    50: '#8382d3',
    500: '#3f52bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f52bf;
$custom-light: #8382d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52bf",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 191
  },
  "hsl": {
    "h": 231.094,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.48797,
    "c": 0.17139,
    "h": 271.1
  },
  "luminance": 0.10853
}

Semantic roles & 50–950 ramp

primary

#3F52BF

secondary

#CAC190

accent

#C54EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F52BF

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

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