#3F30DB#3F30DB

#3F30DB is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 46.1% C 0.243 H 275.1°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#3F30DB
RGB	rgb(63, 48, 219)
HSL	hsl(245, 70%, 52%)
HSV	hsv(245, 78%, 86%)
CMYK	cmyk(71.2%, 78.1%, 0%, 14.1%)
CIE-LAB	lab(34.57, 57.48, -83.57)
CIE-LCH	lch(34.57, 101.43, 304.52°)
OKLab	oklab(46.12% 0.0214 -0.2417)
OKLCH	oklch(46.12% 0.243 275.1)
XYZ	xyz(15.8888, 8.2836, 67.7656)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 3.20

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F30DB #CCDB30

analogous

#3077DB #3F30DB #9430DB

triadic

#3F30DB #DB3F30 #30DB3F

tetradic

#3F30DB #DB3077 #CCDB30 #30DB94

square

#3F30DB #DB3077 #CCDB30 #30DB94

split-complementary

#3F30DB #DB9430 #77DB30

monochromatic

#1E157B #2B1EAF #3F30DB #6F64E4 #A098ED

Accessibility & contrast

On white

7.90

#3F30DB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3F30DB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F30DB

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F30DB	#FFFFFF	#000000	##FFFFFF
##3F30DB	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059E0

Deuteranopia (green-blind)

#0049D8

Tritanopia (blue-blind)

#006485

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f30db;
/* rgb */ color: rgb(63, 48, 219);
/* oklch */ color: oklch(46.1% 0.243 275.1);

Tailwind

colors: {
  custom: {
    50: '#8b6de8',
    500: '#3f30db',
    950: '#000000',
  },
}

SCSS

$custom: #3f30db;
$custom-light: #8b6de8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f30db",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 219
  },
  "hsl": {
    "h": 245.263,
    "s": 70.37,
    "l": 52.353
  },
  "oklch": {
    "l": 0.46118,
    "c": 0.24262,
    "h": 275.1
  },
  "luminance": 0.08285
}

Semantic roles & 50–950 ramp

primary

#3F30DB

secondary

#D2D98E

accent

#ED3BDD

background

#F9F6FE

surface

#F2ECFD

border

#CCC7D5

text

#0E0716

muted

#7E7A84

Preview Lab

Preview with #3F30DB

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

Preview Lab → · Contrast checker → · Palette generator →