#3F31BE#3F31BE

#3F31BE is a dark, highly saturated blue. Relative luminance 0.070; OKLCH L 43.2% C 0.208 H 277.6°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F31BE
RGB	rgb(63, 49, 190)
HSL	hsl(246, 59%, 47%)
HSV	hsv(246, 74%, 75%)
CMYK	cmyk(66.8%, 74.2%, 0%, 25.5%)
CIE-LAB	lab(31.74, 48.09, -71.37)
CIE-LCH	lch(31.74, 86.06, 303.97°)
OKLab	oklab(43.24% 0.0276 -0.2062)
OKLCH	oklch(43.24% 0.208 277.6)
XYZ	xyz(12.4395, 6.9700, 49.3950)
Luminance	0.0697 (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

#3F31BE #B0BE31

analogous

#316ABE #3F31BE #8531BE

triadic

#3F31BE #BE3F31 #31BE3F

tetradic

#3F31BE #BE316A #B0BE31 #31BE85

square

#3F31BE #BE316A #B0BE31 #31BE85

split-complementary

#3F31BE #BE8531 #6ABE31

monochromatic

#1F185D #2F248D #3F31BE #6558D4 #9289E1

Accessibility & contrast

On white

8.77

#3F31BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3F31BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F31BE

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F31BE	#FFFFFF	#000000	##FFFFFF
##3F31BE	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050C2

Deuteranopia (green-blind)

#0045BB

Tritanopia (blue-blind)

#005975

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f31be;
/* rgb */ color: rgb(63, 49, 190);
/* oklch */ color: oklch(43.2% 0.208 277.6);

Tailwind

colors: {
  custom: {
    50: '#856cd3',
    500: '#3f31be',
    950: '#000000',
  },
}

SCSS

$custom: #3f31be;
$custom-light: #856cd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f31be",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 190
  },
  "hsl": {
    "h": 245.957,
    "s": 58.996,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43241,
    "c": 0.208,
    "h": 277.6
  },
  "luminance": 0.06971
}

Semantic roles & 50–950 ramp

primary

#3F31BE

secondary

#C3CA80

accent

#E246D3

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0D0714

muted

#7D7A83

Preview Lab

Preview with #3F31BE

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

Preview Lab → · Contrast checker → · Palette generator →