#3F4DCE#3F4DCE

#3F4DCE is a mid, vivid blue. Relative luminance 0.108; OKLCH L 49.1% C 0.197 H 272.1°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DCE
RGB	rgb(63, 77, 206)
HSL	hsl(234, 59%, 53%)
HSV	hsv(234, 69%, 81%)
CMYK	cmyk(69.4%, 62.6%, 0%, 19.2%)
CIE-LAB	lab(39.27, 36.91, -68.33)
CIE-LCH	lch(39.27, 77.66, 298.37°)
OKLab	oklab(49.13% 0.0071 -0.1973)
OKLCH	oklch(49.13% 0.197 272.1)
XYZ	xyz(15.8406, 10.8192, 59.6341)
Luminance	0.1082 (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

#3F4DCE #CEC03F

analogous

#3F94CE #3F4DCE #793FCE

triadic

#3F4DCE #CE3F4D #4DCE3F

tetradic

#3F4DCE #CE3F94 #CEC03F #3FCE79

square

#3F4DCE #CE3F94 #CEC03F #3FCE79

split-complementary

#3F4DCE #CE793F #94CE3F

monochromatic

#1E2675 #2A36A6 #3F4DCE #707ADA #A1A7E7

Accessibility & contrast

On white

6.64

#3F4DCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3F4DCE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4DCE

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DCE	#FFFFFF	#000000	##FFFFFF
##3F4DCE	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063D2

Deuteranopia (green-blind)

#0056CC

Tritanopia (blue-blind)

#006E86

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4dce;
/* rgb */ color: rgb(63, 77, 206);
/* oklch */ color: oklch(49.1% 0.197 272.1);

Tailwind

colors: {
  custom: {
    50: '#867fde',
    500: '#3f4dce',
    950: '#000000',
  },
}

SCSS

$custom: #3f4dce;
$custom-light: #867fde;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4dce",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 206
  },
  "hsl": {
    "h": 234.126,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.49125,
    "c": 0.19739,
    "h": 272.1
  },
  "luminance": 0.10821
}

Semantic roles & 50–950 ramp

primary

#3F4DCE

secondary

#D3CD95

accent

#D345E3

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #3F4DCE

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

Preview Lab → · Contrast checker → · Palette generator →