#3F31BD#3F31BD

#3F31BD is a dark, highly saturated blue. Relative luminance 0.069; OKLCH L 43.1% C 0.207 H 277.7°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F31BD
RGB	rgb(63, 49, 189)
HSL	hsl(246, 59%, 47%)
HSV	hsv(246, 74%, 74%)
CMYK	cmyk(66.7%, 74.1%, 0%, 25.9%)
CIE-LAB	lab(31.64, 47.77, -70.94)
CIE-LCH	lch(31.64, 85.53, 303.96°)
OKLab	oklab(43.14% 0.0278 -0.2049)
OKLCH	oklch(43.14% 0.207 277.7)
XYZ	xyz(12.3305, 6.9265, 48.8214)
Luminance	0.0693 (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

#3F31BD #AFBD31

analogous

#3169BD #3F31BD #8531BD

triadic

#3F31BD #BD3F31 #31BD3F

tetradic

#3F31BD #BD3169 #AFBD31 #31BD85

square

#3F31BD #BD3169 #AFBD31 #31BD85

split-complementary

#3F31BD #BD8531 #69BD31

monochromatic

#1F185C #2F248C #3F31BD #6458D4 #9188E0

Accessibility & contrast

On white

8.80

#3F31BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3F31BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F31BD

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F31BD	#FFFFFF	#000000	##FFFFFF
##3F31BD	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050C1

Deuteranopia (green-blind)

#0045BA

Tritanopia (blue-blind)

#005974

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f31bd;
/* rgb */ color: rgb(63, 49, 189);
/* oklch */ color: oklch(43.1% 0.207 277.7);

Tailwind

colors: {
  custom: {
    50: '#856cd2',
    500: '#3f31bd',
    950: '#000000',
  },
}

SCSS

$custom: #3f31bd;
$custom-light: #856cd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f31bd",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 189
  },
  "hsl": {
    "h": 246,
    "s": 58.824,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43141,
    "c": 0.20679,
    "h": 277.7
  },
  "luminance": 0.06928
}

Semantic roles & 50–950 ramp

primary

#3F31BD

secondary

#C3CA80

accent

#E246D2

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3F31BD

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

Preview Lab → · Contrast checker → · Palette generator →