#3F4DCC#3F4DCC

#3F4DCC is a mid, vivid blue. Relative luminance 0.107; OKLCH L 49.0% C 0.195 H 272.1°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DCC
RGB	rgb(63, 77, 204)
HSL	hsl(234, 58%, 52%)
HSV	hsv(234, 69%, 80%)
CMYK	cmyk(69.1%, 62.3%, 0%, 20%)
CIE-LAB	lab(39.11, 36.21, -67.45)
CIE-LCH	lch(39.11, 76.55, 298.23°)
OKLab	oklab(48.95% 0.0072 -0.1947)
OKLCH	oklch(48.95% 0.195 272.1)
XYZ	xyz(15.5992, 10.7226, 58.3626)
Luminance	0.1072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.78

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DCC #CCBE3F

analogous

#3F93CC #3F4DCC #783FCC

triadic

#3F4DCC #CC3F4D #4DCC3F

tetradic

#3F4DCC #CC3F93 #CCBE3F #3FCC78

square

#3F4DCC #CC3F93 #CCBE3F #3FCC78

split-complementary

#3F4DCC #CC783F #93CC3F

monochromatic

#1E2772 #2B37A3 #3F4DCC #6F7AD9 #A0A7E6

Accessibility & contrast

On white

6.68

#3F4DCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3F4DCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4DCC

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DCC	#FFFFFF	#000000	##FFFFFF
##3F4DCC	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)

#0063D0

Deuteranopia (green-blind)

#0056CA

Tritanopia (blue-blind)

#006D85

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4dcc;
/* rgb */ color: rgb(63, 77, 204);
/* oklch */ color: oklch(49.0% 0.195 272.1);

Tailwind

colors: {
  custom: {
    50: '#867fdd',
    500: '#3f4dcc',
    950: '#000000',
  },
}

SCSS

$custom: #3f4dcc;
$custom-light: #867fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4dcc",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 204
  },
  "hsl": {
    "h": 234.043,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.48953,
    "c": 0.19479,
    "h": 272.1
  },
  "luminance": 0.10724
}

Semantic roles & 50–950 ramp

primary

#3F4DCC

secondary

#D2CC95

accent

#D247E1

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0A15

muted

#7D7C83

Preview Lab

Preview with #3F4DCC

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

Preview Lab → · Contrast checker → · Palette generator →