#3F4EC6#3F4EC6

#3F4EC6 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.6% C 0.186 H 272.1°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EC6
RGB	rgb(63, 78, 198)
HSL	hsl(233, 54%, 51%)
HSV	hsv(233, 68%, 78%)
CMYK	cmyk(68.2%, 60.6%, 0%, 22.4%)
CIE-LAB	lab(38.87, 33.49, -64.36)
CIE-LCH	lch(38.87, 72.56, 297.49°)
OKLab	oklab(48.62% 0.0067 -0.1856)
OKLCH	oklch(48.62% 0.186 272.1)
XYZ	xyz(14.9639, 10.5813, 54.6689)
Luminance	0.1058 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EC6 #C6B73F

analogous

#3F91C6 #3F4EC6 #733FC6

triadic

#3F4EC6 #C63F4E #4EC63F

tetradic

#3F4EC6 #C63F91 #C6B73F #3FC673

square

#3F4EC6 #C63F91 #C6B73F #3FC673

split-complementary

#3F4EC6 #C6733F #91C63F

monochromatic

#20286B #2E3A9A #3F4EC6 #6E7AD4 #9DA5E2

Accessibility & contrast

On white

6.74

#3F4EC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3F4EC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4EC6

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EC6	#FFFFFF	#000000	##FFFFFF
##3F4EC6	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062CA

Deuteranopia (green-blind)

#0055C4

Tritanopia (blue-blind)

#006C82

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4ec6;
/* rgb */ color: rgb(63, 78, 198);
/* oklch */ color: oklch(48.6% 0.186 272.1);

Tailwind

colors: {
  custom: {
    50: '#847fd8',
    500: '#3f4ec6',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ec6;
$custom-light: #847fd8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ec6",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 198
  },
  "hsl": {
    "h": 233.333,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.48622,
    "c": 0.18573,
    "h": 272.1
  },
  "luminance": 0.10583
}

Semantic roles & 50–950 ramp

primary

#3F4EC6

secondary

#CEC893

accent

#CD4ADE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4EC6

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

Preview Lab → · Contrast checker → · Palette generator →