#3F4EC9#3F4EC9

#3F4EC9 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.9% C 0.190 H 272.0°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EC9
RGB	rgb(63, 78, 201)
HSL	hsl(233, 56%, 52%)
HSV	hsv(233, 69%, 79%)
CMYK	cmyk(68.7%, 61.2%, 0%, 21.2%)
CIE-LAB	lab(39.11, 34.54, -65.71)
CIE-LCH	lch(39.11, 74.24, 297.73°)
OKLab	oklab(48.88% 0.0066 -0.1896)
OKLCH	oklch(48.88% 0.19 272)
XYZ	xyz(15.3134, 10.7211, 56.5094)
Luminance	0.1072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EC9 #C9BA3F

analogous

#3F93C9 #3F4EC9 #753FC9

triadic

#3F4EC9 #C93F4E #4EC93F

tetradic

#3F4EC9 #C93F93 #C9BA3F #3FC975

square

#3F4EC9 #C93F93 #C9BA3F #3FC975

split-complementary

#3F4EC9 #C9753F #93C93F

monochromatic

#1F286F #2D399E #3F4EC9 #6F7AD6 #9FA6E4

Accessibility & contrast

On white

6.68

#3F4EC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3F4EC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4EC9

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EC9	#FFFFFF	#000000	##FFFFFF
##3F4EC9	1.00	6.68	3.14	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CD

Deuteranopia (green-blind)

#0056C7

Tritanopia (blue-blind)

#006D84

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4ec9;
/* rgb */ color: rgb(63, 78, 201);
/* oklch */ color: oklch(48.9% 0.190 272.0);

Tailwind

colors: {
  custom: {
    50: '#857fda',
    500: '#3f4ec9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ec9;
$custom-light: #857fda;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ec9",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 201
  },
  "hsl": {
    "h": 233.478,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.48875,
    "c": 0.18968,
    "h": 272
  },
  "luminance": 0.10723
}

Semantic roles & 50–950 ramp

primary

#3F4EC9

secondary

#D0CA94

accent

#CF48DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4EC9

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

Preview Lab → · Contrast checker → · Palette generator →