#3F39C5#3F39C5

#3F39C5 is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.1% C 0.208 H 275.9°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F39C5
RGB	rgb(63, 57, 197)
HSL	hsl(243, 55%, 50%)
HSV	hsv(243, 71%, 77%)
CMYK	cmyk(68%, 71.1%, 0%, 22.7%)
CIE-LAB	lab(34.01, 45.88, -71.74)
CIE-LCH	lch(34.01, 85.15, 302.60°)
OKLab	oklab(45.06% 0.0215 -0.2073)
OKLCH	oklch(45.06% 0.208 275.9)
XYZ	xyz(13.5878, 8.0130, 53.6431)
Luminance	0.0801 (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

#3F39C5 #BFC539

analogous

#3979C5 #3F39C5 #8539C5

triadic

#3F39C5 #C53F39 #39C53F

tetradic

#3F39C5 #C53979 #BFC539 #39C585

square

#3F39C5 #C53979 #BFC539 #39C585

split-complementary

#3F39C5 #C58539 #79C539

monochromatic

#211E66 #302B96 #3F39C5 #6D68D3 #9B97E1

Accessibility & contrast

On white

8.07

#3F39C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3F39C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39C5

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F39C5	#FFFFFF	#000000	##FFFFFF
##3F39C5	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C9

Deuteranopia (green-blind)

#004AC2

Tritanopia (blue-blind)

#00607B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f39c5;
/* rgb */ color: rgb(63, 57, 197);
/* oklch */ color: oklch(45.1% 0.208 275.9);

Tailwind

colors: {
  custom: {
    50: '#8671d8',
    500: '#3f39c5',
    950: '#000000',
  },
}

SCSS

$custom: #3f39c5;
$custom-light: #8671d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f39c5",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 197
  },
  "hsl": {
    "h": 242.571,
    "s": 55.118,
    "l": 49.804
  },
  "oklch": {
    "l": 0.45062,
    "c": 0.20838,
    "h": 275.9
  },
  "luminance": 0.08014
}

Semantic roles & 50–950 ramp

primary

#3F39C5

secondary

#CACD8D

accent

#DE49D8

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3F39C5

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

Preview Lab → · Contrast checker → · Palette generator →