#3F39CC#3F39CC

#3F39CC is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 45.7% C 0.217 H 275.4°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F39CC
RGB	rgb(63, 57, 204)
HSL	hsl(242, 59%, 51%)
HSV	hsv(242, 72%, 80%)
CMYK	cmyk(69.1%, 72.1%, 0%, 20%)
CIE-LAB	lab(34.68, 48.14, -74.71)
CIE-LCH	lch(34.68, 88.87, 302.80°)
OKLab	oklab(45.75% 0.0203 -0.2159)
OKLCH	oklch(45.75% 0.217 275.4)
XYZ	xyz(14.4085, 8.3413, 57.9657)
Luminance	0.0834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F39CC #C6CC39

analogous

#397CCC #3F39CC #8839CC

triadic

#3F39CC #CC3F39 #39CC3F

tetradic

#3F39CC #CC397C #C6CC39 #39CC88

square

#3F39CC #CC397C #C6CC39 #39CC88

split-complementary

#3F39CC #CC8839 #7CCC39

monochromatic

#201C6E #2E299F #3F39CC #6E6AD9 #9D9AE5

Accessibility & contrast

On white

7.87

#3F39CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3F39CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39CC

7.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39CC	#FFFFFF	#000000	##FFFFFF
##3F39CC	1.00	7.87	2.67	7.87
#FFFFFF	7.87	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D0

Deuteranopia (green-blind)

#004BC9

Tritanopia (blue-blind)

#00627F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f39cc;
/* rgb */ color: rgb(63, 57, 204);
/* oklch */ color: oklch(45.7% 0.217 275.4);

Tailwind

colors: {
  custom: {
    50: '#8771dd',
    500: '#3f39cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f39cc;
$custom-light: #8771dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39cc",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 204
  },
  "hsl": {
    "h": 242.449,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.45746,
    "c": 0.2169,
    "h": 275.4
  },
  "luminance": 0.08343
}

Semantic roles & 50–950 ramp

primary

#3F39CC

secondary

#CED190

accent

#E246DC

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F39CC

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

Preview Lab → · Contrast checker → · Palette generator →