#3F4EC5#3F4EC5

#3F4EC5 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.5% C 0.184 H 272.1°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EC5
RGB	rgb(63, 78, 197)
HSL	hsl(233, 54%, 51%)
HSV	hsv(233, 68%, 77%)
CMYK	cmyk(68%, 60.4%, 0%, 22.7%)
CIE-LAB	lab(38.79, 33.14, -63.91)
CIE-LCH	lch(38.79, 71.99, 297.41°)
OKLab	oklab(48.54% 0.0067 -0.1843)
OKLCH	oklch(48.54% 0.184 272.1)
XYZ	xyz(14.8489, 10.5354, 54.0635)
Luminance	0.1054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EC5 #C5B63F

analogous

#3F91C5 #3F4EC5 #733FC5

triadic

#3F4EC5 #C53F4E #4EC53F

tetradic

#3F4EC5 #C53F91 #C5B63F #3FC573

square

#3F4EC5 #C53F91 #C5B63F #3FC573

split-complementary

#3F4EC5 #C5733F #91C53F

monochromatic

#20286A #2E3A99 #3F4EC5 #6E79D3 #9DA5E1

Accessibility & contrast

On white

6.76

#3F4EC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#3F4EC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4EC5

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EC5	#FFFFFF	#000000	##FFFFFF
##3F4EC5	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C9

Deuteranopia (green-blind)

#0055C3

Tritanopia (blue-blind)

#006C82

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f4ec5;
/* rgb */ color: rgb(63, 78, 197);
/* oklch */ color: oklch(48.5% 0.184 272.1);

Tailwind

colors: {
  custom: {
    50: '#847fd7',
    500: '#3f4ec5',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ec5;
$custom-light: #847fd7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ec5",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 197
  },
  "hsl": {
    "h": 233.284,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.48539,
    "c": 0.1844,
    "h": 272.1
  },
  "luminance": 0.10537
}

Semantic roles & 50–950 ramp

primary

#3F4EC5

secondary

#CEC792

accent

#CD4BDD

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4EC5

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

Preview Lab → · Contrast checker → · Palette generator →