#3F52B4#3F52B4

#3F52B4 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.9% C 0.156 H 271.1°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#3F52B4
RGB	rgb(63, 82, 180)
HSL	hsl(230, 48%, 48%)
HSV	hsv(230, 65%, 71%)
CMYK	cmyk(65%, 54.4%, 0%, 29.4%)
CIE-LAB	lab(38.53, 24.57, -54.38)
CIE-LCH	lch(38.53, 59.68, 294.32°)
OKLab	oklab(47.94% 0.0029 -0.1562)
OKLCH	oklch(47.94% 0.156 271.1)
XYZ	xyz(13.3026, 10.3855, 44.4747)
Luminance	0.1039 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52B4 #B4A13F

analogous

#3F8DB4 #3F52B4 #663FB4

triadic

#3F52B4 #B43F52 #52B43F

tetradic

#3F52B4 #B43F8D #B4A13F #3FB466

square

#3F52B4 #B43F8D #B4A13F #3FB466

split-complementary

#3F52B4 #B4663F #8DB43F

monochromatic

#1F2959 #2F3D87 #3F52B4 #6777CA #949FDA

Accessibility & contrast

On white

6.82

#3F52B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#3F52B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52B4

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52B4	#FFFFFF	#000000	##FFFFFF
##3F52B4	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0960B7

Deuteranopia (green-blind)

#0056B2

Tritanopia (blue-blind)

#00697B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f52b4;
/* rgb */ color: rgb(63, 82, 180);
/* oklch */ color: oklch(47.9% 0.156 271.1);

Tailwind

colors: {
  custom: {
    50: '#8182cb',
    500: '#3f52b4',
    950: '#000000',
  },
}

SCSS

$custom: #3f52b4;
$custom-light: #8182cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52b4",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 180
  },
  "hsl": {
    "h": 230.256,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47941,
    "c": 0.15625,
    "h": 271.1
  },
  "luminance": 0.10387
}

Semantic roles & 50–950 ramp

primary

#3F52B4

secondary

#C5BB8A

accent

#C250D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F52B4

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

Preview Lab → · Contrast checker → · Palette generator →