#3F52CC#3F52CC

#3F52CC is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.9% C 0.189 H 271.1°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#3F52CC
RGB	rgb(63, 82, 204)
HSL	hsl(232, 58%, 52%)
HSV	hsv(232, 69%, 80%)
CMYK	cmyk(69.1%, 59.8%, 0%, 20%)
CIE-LAB	lab(40.33, 33.07, -65.46)
CIE-LCH	lch(40.33, 73.34, 296.80°)
OKLab	oklab(49.85% 0.0035 -0.1888)
OKLCH	oklch(49.85% 0.189 271.1)
XYZ	xyz(15.9626, 11.4494, 58.4838)
Luminance	0.1145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F52CC #CCB93F

analogous

#3F98CC #3F52CC #733FCC

triadic

#3F52CC #CC3F52 #52CC3F

tetradic

#3F52CC #CC3F98 #CCB93F #3FCC73

square

#3F52CC #CC3F98 #CCB93F #3FCC73

split-complementary

#3F52CC #CC733F #98CC3F

monochromatic

#1E2A72 #2B3BA3 #3F52CC #6F7ED9 #A0A9E6

Accessibility & contrast

On white

6.38

#3F52CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3F52CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F52CC

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F52CC	#FFFFFF	#000000	##FFFFFF
##3F52CC	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D0

Deuteranopia (green-blind)

#0059CA

Tritanopia (blue-blind)

#007187

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f52cc;
/* rgb */ color: rgb(63, 82, 204);
/* oklch */ color: oklch(49.9% 0.189 271.1);

Tailwind

colors: {
  custom: {
    50: '#8582dc',
    500: '#3f52cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f52cc;
$custom-light: #8582dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f52cc",
  "rgb": {
    "r": 63,
    "g": 82,
    "b": 204
  },
  "hsl": {
    "h": 231.915,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.49853,
    "c": 0.18881,
    "h": 271.1
  },
  "luminance": 0.11451
}

Semantic roles & 50–950 ramp

primary

#3F52CC

secondary

#D2CA95

accent

#CC47E1

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F52CC

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

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