#3F52BD#3F52BD

#3F52BD is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.6% C 0.169 H 271.1°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F52BD
RGB	rgb(63, 82, 189)
HSL	hsl(231, 50%, 49%)
HSV	hsv(231, 67%, 74%)
CMYK	cmyk(66.7%, 56.6%, 0%, 25.9%)
CIE-LAB	lab(39.18, 27.77, -58.61)
CIE-LCH	lch(39.18, 64.85, 295.35°)
OKLab	oklab(48.64% 0.0033 -0.1686)
OKLCH	oklch(48.64% 0.169 271.1)
XYZ	xyz(14.2494, 10.7642, 49.4610)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52BD #BDAA3F

analogous

#3F91BD #3F52BD #6B3FBD

triadic

#3F52BD #BD3F52 #52BD3F

tetradic

#3F52BD #BD3F91 #BDAA3F #3FBD6B

square

#3F52BD #BD3F91 #BDAA3F #3FBD6B

split-complementary

#3F52BD #BD6B3F #91BD3F

monochromatic

#202A61 #303E8F #3F52BD #6B7ACE #99A4DD

Accessibility & contrast

On white

6.66

#3F52BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3F52BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52BD

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52BD	#FFFFFF	#000000	##FFFFFF
##3F52BD	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C1

Deuteranopia (green-blind)

#0057BB

Tritanopia (blue-blind)

#006C7F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f52bd;
/* rgb */ color: rgb(63, 82, 189);
/* oklch */ color: oklch(48.6% 0.169 271.1);

Tailwind

colors: {
  custom: {
    50: '#8282d2',
    500: '#3f52bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f52bd;
$custom-light: #8282d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52bd",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 189
  },
  "hsl": {
    "h": 230.952,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.48639,
    "c": 0.16867,
    "h": 271.1
  },
  "luminance": 0.10765
}

Semantic roles & 50–950 ramp

primary

#3F52BD

secondary

#C9C08F

accent

#C54EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F52BD

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

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