#3F3DB2#3F3DB2

#3F3DB2 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.9% C 0.180 H 276.8°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F3DB2
RGB	rgb(63, 61, 178)
HSL	hsl(241, 49%, 47%)
HSV	hsv(241, 66%, 70%)
CMYK	cmyk(64.6%, 65.7%, 0%, 30.2%)
CIE-LAB	lab(33.15, 37.23, -61.94)
CIE-LCH	lch(33.15, 72.27, 301.01°)
OKLab	oklab(43.92% 0.0212 -0.1786)
OKLCH	oklch(43.92% 0.18 276.8)
XYZ	xyz(11.7519, 7.6076, 42.9600)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F3DB2 #B0B23D

analogous

#3D75B2 #3F3DB2 #7A3DB2

triadic

#3F3DB2 #B23F3D #3DB23F

tetradic

#3F3DB2 #B23D75 #B0B23D #3DB27A

square

#3F3DB2 #B23D75 #B0B23D #3DB27A

split-complementary

#3F3DB2 #B27A3D #75B23D

monochromatic

#1F1E57 #2F2D84 #3F3DB2 #6563C9 #9290D9

Accessibility & contrast

On white

8.33

#3F3DB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3F3DB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F3DB2

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F3DB2	#FFFFFF	#000000	##FFFFFF
##3F3DB2	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B6

Deuteranopia (green-blind)

#0049B0

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3f3db2;
/* rgb */ color: rgb(63, 61, 178);
/* oklch */ color: oklch(43.9% 0.180 276.8);

Tailwind

colors: {
  custom: {
    50: '#8273ca',
    500: '#3f3db2',
    950: '#000000',
  },
}

SCSS

$custom: #3f3db2;
$custom-light: #8273ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f3db2",
  "rgb": {
    "r": 63,
    "g": 61,
    "b": 178
  },
  "hsl": {
    "h": 241.026,
    "s": 48.954,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43916,
    "c": 0.17987,
    "h": 276.8
  },
  "luminance": 0.07609
}

Semantic roles & 50–950 ramp

primary

#3F3DB2

secondary

#C3C487

accent

#D94FD6

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3F3DB2

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

Preview Lab → · Contrast checker → · Palette generator →