#3F4DCA#3F4DCA

#3F4DCA is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.8% C 0.192 H 272.2°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DCA
RGB	rgb(63, 77, 202)
HSL	hsl(234, 57%, 52%)
HSV	hsv(234, 69%, 79%)
CMYK	cmyk(68.8%, 61.9%, 0%, 20.8%)
CIE-LAB	lab(38.95, 35.52, -66.56)
CIE-LCH	lch(38.95, 75.44, 298.09°)
OKLab	oklab(48.78% 0.0073 -0.192)
OKLCH	oklch(48.78% 0.192 272.2)
XYZ	xyz(15.3609, 10.6273, 57.1074)
Luminance	0.1063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.80

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DCA #CABC3F

analogous

#3F93CA #3F4DCA #773FCA

triadic

#3F4DCA #CA3F4D #4DCA3F

tetradic

#3F4DCA #CA3F93 #CABC3F #3FCA77

square

#3F4DCA #CA3F93 #CABC3F #3FCA77

split-complementary

#3F4DCA #CA773F #93CA3F

monochromatic

#1F2770 #2C38A0 #3F4DCA #6F79D7 #9FA6E4

Accessibility & contrast

On white

6.72

#3F4DCA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3F4DCA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4DCA

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DCA	#FFFFFF	#000000	##FFFFFF
##3F4DCA	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062CE

Deuteranopia (green-blind)

#0055C8

Tritanopia (blue-blind)

#006D84

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4dca;
/* rgb */ color: rgb(63, 77, 202);
/* oklch */ color: oklch(48.8% 0.192 272.2);

Tailwind

colors: {
  custom: {
    50: '#857fdb',
    500: '#3f4dca',
    950: '#000000',
  },
}

SCSS

$custom: #3f4dca;
$custom-light: #857fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4dca",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 202
  },
  "hsl": {
    "h": 233.957,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.48781,
    "c": 0.19219,
    "h": 272.2
  },
  "luminance": 0.10629
}

Semantic roles & 50–950 ramp

primary

#3F4DCA

secondary

#D1CB94

accent

#D148E0

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4DCA

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

Preview Lab → · Contrast checker → · Palette generator →