#3F4EC8#3F4EC8

#3F4EC8 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.8% C 0.188 H 272.0°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EC8
RGB	rgb(63, 78, 200)
HSL	hsl(233, 55%, 52%)
HSV	hsv(233, 69%, 78%)
CMYK	cmyk(68.5%, 61%, 0%, 21.6%)
CIE-LAB	lab(39.03, 34.19, -65.26)
CIE-LCH	lch(39.03, 73.68, 297.65°)
OKLab	oklab(48.79% 0.0066 -0.1882)
OKLCH	oklch(48.79% 0.188 272)
XYZ	xyz(15.1961, 10.6742, 55.8919)
Luminance	0.1068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EC8 #C8B93F

analogous

#3F93C8 #3F4EC8 #753FC8

triadic

#3F4EC8 #C83F4E #4EC83F

tetradic

#3F4EC8 #C83F93 #C8B93F #3FC875

square

#3F4EC8 #C83F93 #C8B93F #3FC875

split-complementary

#3F4EC8 #C8753F #93C83F

monochromatic

#1F286D #2D399D #3F4EC8 #6F7AD6 #9EA6E3

Accessibility & contrast

On white

6.70

#3F4EC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3F4EC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4EC8

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EC8	#FFFFFF	#000000	##FFFFFF
##3F4EC8	1.00	6.70	3.14	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062CC

Deuteranopia (green-blind)

#0056C6

Tritanopia (blue-blind)

#006D83

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4ec8;
/* rgb */ color: rgb(63, 78, 200);
/* oklch */ color: oklch(48.8% 0.188 272.0);

Tailwind

colors: {
  custom: {
    50: '#857fda',
    500: '#3f4ec8',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ec8;
$custom-light: #857fda;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ec8",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 200
  },
  "hsl": {
    "h": 233.431,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.48791,
    "c": 0.18837,
    "h": 272
  },
  "luminance": 0.10676
}

Semantic roles & 50–950 ramp

primary

#3F4EC8

secondary

#D0C993

accent

#CE49DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4EC8

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

Preview Lab → · Contrast checker → · Palette generator →