#3F52C0#3F52C0

#3F52C0 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.9% C 0.173 H 271.1°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#3F52C0
RGB	rgb(63, 82, 192)
HSL	hsl(231, 51%, 50%)
HSV	hsv(231, 67%, 75%)
CMYK	cmyk(67.2%, 57.3%, 0%, 24.7%)
CIE-LAB	lab(39.40, 28.83, -59.99)
CIE-LCH	lch(39.40, 66.56, 295.67°)
OKLab	oklab(48.88% 0.0034 -0.1727)
OKLCH	oklch(48.88% 0.173 271.1)
XYZ	xyz(14.5784, 10.8958, 51.1938)
Luminance	0.1090 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52C0 #C0AD3F

analogous

#3F92C0 #3F52C0 #6D3FC0

triadic

#3F52C0 #C03F52 #52C03F

tetradic

#3F52C0 #C03F92 #C0AD3F #3FC06D

square

#3F52C0 #C03F92 #C0AD3F #3FC06D

split-complementary

#3F52C0 #C06D3F #92C03F

monochromatic

#212B64 #303E92 #3F52C0 #6D7CCF #9BA5DE

Accessibility & contrast

On white

6.61

#3F52C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#3F52C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52C0

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52C0	#FFFFFF	#000000	##FFFFFF
##3F52C0	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C4

Deuteranopia (green-blind)

#0057BE

Tritanopia (blue-blind)

#006D81

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3f52c0;
/* rgb */ color: rgb(63, 82, 192);
/* oklch */ color: oklch(48.9% 0.173 271.1);

Tailwind

colors: {
  custom: {
    50: '#8382d4',
    500: '#3f52c0',
    950: '#000000',
  },
}

SCSS

$custom: #3f52c0;
$custom-light: #8382d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52c0",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 192
  },
  "hsl": {
    "h": 231.163,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.48877,
    "c": 0.17275,
    "h": 271.1
  },
  "luminance": 0.10897
}

Semantic roles & 50–950 ramp

primary

#3F52C0

secondary

#CAC291

accent

#C54EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F52C0

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

Preview Lab → · Contrast checker → · Palette generator →