#3F46CE#3F46CE

#3F46CE is a mid, highly saturated blue. Relative luminance 0.099; OKLCH L 47.9% C 0.205 H 273.3°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F46CE
RGB	rgb(63, 70, 206)
HSL	hsl(237, 59%, 53%)
HSV	hsv(237, 69%, 81%)
CMYK	cmyk(69.4%, 66%, 0%, 19.2%)
CIE-LAB	lab(37.65, 41.21, -71.00)
CIE-LCH	lch(37.65, 82.09, 300.13°)
OKLab	oklab(47.94% 0.012 -0.2051)
OKLCH	oklch(47.94% 0.205 273.3)
XYZ	xyz(15.3769, 9.8918, 59.4795)
Luminance	0.0989 (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

#3F46CE #CEC73F

analogous

#3F8DCE #3F46CE #7F3FCE

triadic

#3F46CE #CE3F46 #46CE3F

tetradic

#3F46CE #CE3F8D #CEC73F #3FCE7F

square

#3F46CE #CE3F8D #CEC73F #3FCE7F

split-complementary

#3F46CE #CE7F3F #8DCE3F

monochromatic

#1E2275 #2A30A6 #3F46CE #7075DA #A1A4E7

Accessibility & contrast

On white

7.05

#3F46CE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3F46CE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F46CE

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F46CE	#FFFFFF	#000000	##FFFFFF
##3F46CE	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD2

Deuteranopia (green-blind)

#0052CB

Tritanopia (blue-blind)

#006A84

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f46ce;
/* rgb */ color: rgb(63, 70, 206);
/* oklch */ color: oklch(47.9% 0.205 273.3);

Tailwind

colors: {
  custom: {
    50: '#877ade',
    500: '#3f46ce',
    950: '#000000',
  },
}

SCSS

$custom: #3f46ce;
$custom-light: #877ade;
$custom-dark: #000000;

JSON

{
  "hex": "#3f46ce",
  "rgb": {
    "r": 63,
    "g": 70,
    "b": 206
  },
  "hsl": {
    "h": 237.063,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.47936,
    "c": 0.20546,
    "h": 273.3
  },
  "luminance": 0.09893
}

Semantic roles & 50–950 ramp

primary

#3F46CE

secondary

#D3D095

accent

#DB45E3

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F46CE

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

Preview Lab → · Contrast checker → · Palette generator →