#3F319B#3F319B

#3F319B is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.9% C 0.164 H 282.0°. Best body text is #FFFFFF at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#3F319B
RGB	rgb(63, 49, 155)
HSL	hsl(248, 52%, 40%)
HSV	hsv(248, 68%, 61%)
CMYK	cmyk(59.4%, 68.4%, 0%, 39.2%)
CIE-LAB	lab(28.43, 36.91, -55.83)
CIE-LCH	lch(28.43, 66.93, 303.47°)
OKLab	oklab(39.88% 0.034 -0.1607)
OKLCH	oklch(39.88% 0.164 282)
XYZ	xyz(9.0628, 5.6193, 31.6111)
Luminance	0.0562 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.19

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F319B #8D9B31

analogous

#31589B #3F319B #74319B

triadic

#3F319B #9B3F31 #319B3F

tetradic

#3F319B #9B3158 #8D9B31 #319B74

square

#3F319B #9B3158 #8D9B31 #319B74

split-complementary

#3F319B #9B7431 #589B31

monochromatic

#19143E #2C226D #3F319B #5645C4 #8073D3

Accessibility & contrast

On white

9.89

#3F319B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#3F319B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F319B

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F319B	#FFFFFF	#000000	##FFFFFF
##3F319B	1.00	9.89	2.12	9.89
#FFFFFF	9.89	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#054C62

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3f319b;
/* rgb */ color: rgb(63, 49, 155);
/* oklch */ color: oklch(39.9% 0.164 282.0);

Tailwind

colors: {
  custom: {
    50: '#7e6ab9',
    500: '#3f319b',
    950: '#000000',
  },
}

SCSS

$custom: #3f319b;
$custom-light: #7e6ab9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f319b",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 155
  },
  "hsl": {
    "h": 247.925,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.39876,
    "c": 0.16426,
    "h": 282
  },
  "luminance": 0.0562
}

Semantic roles & 50–950 ramp

primary

#3F319B

secondary

#B1BB6D

accent

#DB4CC9

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #3F319B

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

Preview Lab → · Contrast checker → · Palette generator →