#3F46CF#3F46CF

#3F46CF is a mid, highly saturated blue. Relative luminance 0.099; OKLCH L 48.0% C 0.207 H 273.3°. Best body text is #FFFFFF at 7.03:1 contrast (WCAG AA passes).

Color values

HEX	#3F46CF
RGB	rgb(63, 70, 207)
HSL	hsl(237, 60%, 53%)
HSV	hsv(237, 70%, 81%)
CMYK	cmyk(69.6%, 66.2%, 0%, 18.8%)
CIE-LAB	lab(37.74, 41.54, -71.43)
CIE-LCH	lch(37.74, 82.63, 300.18°)
OKLab	oklab(48.03% 0.0119 -0.2064)
OKLCH	oklch(48.03% 0.207 273.3)
XYZ	xyz(15.4988, 9.9406, 60.1213)
Luminance	0.0994 (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

#3F46CF #CFC83F

analogous

#3F8ECF #3F46CF #803FCF

triadic

#3F46CF #CF3F46 #46CF3F

tetradic

#3F46CF #CF3F8E #CFC83F #3FCF80

square

#3F46CF #CF3F8E #CFC83F #3FCF80

split-complementary

#3F46CF #CF803F #8ECF3F

monochromatic

#1E2276 #2A30A7 #3F46CF #7075DB #A1A4E7

Accessibility & contrast

On white

7.03

#3F46CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#3F46CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F46CF

7.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F46CF	#FFFFFF	#000000	##FFFFFF
##3F46CF	1.00	7.03	2.99	7.03
#FFFFFF	7.03	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D3

Deuteranopia (green-blind)

#0052CC

Tritanopia (blue-blind)

#006A84

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f46cf;
/* rgb */ color: rgb(63, 70, 207);
/* oklch */ color: oklch(48.0% 0.207 273.3);

Tailwind

colors: {
  custom: {
    50: '#877adf',
    500: '#3f46cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f46cf;
$custom-light: #877adf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f46cf",
  "rgb": {
    "r": 63,
    "g": 70,
    "b": 207
  },
  "hsl": {
    "h": 237.083,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.48027,
    "c": 0.20672,
    "h": 273.3
  },
  "luminance": 0.09942
}

Semantic roles & 50–950 ramp

primary

#3F46CF

secondary

#D4D196

accent

#DB45E3

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F46CF

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

Preview Lab → · Contrast checker → · Palette generator →