#3F30BE#3F30BE

#3F30BE is a dark, highly saturated blue. Relative luminance 0.069; OKLCH L 43.1% C 0.209 H 277.7°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#3F30BE
RGB	rgb(63, 48, 190)
HSL	hsl(246, 60%, 47%)
HSV	hsv(246, 75%, 75%)
CMYK	cmyk(66.8%, 74.7%, 0%, 25.5%)
CIE-LAB	lab(31.55, 48.62, -71.68)
CIE-LCH	lch(31.55, 86.62, 304.15°)
OKLab	oklab(43.11% 0.0282 -0.2071)
OKLCH	oklch(43.11% 0.209 277.7)
XYZ	xyz(12.3981, 6.8873, 49.3812)
Luminance	0.0689 (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

#3F30BE #AFBE30

analogous

#3068BE #3F30BE #8630BE

triadic

#3F30BE #BE3F30 #30BE3F

tetradic

#3F30BE #BE3068 #AFBE30 #30BE86

square

#3F30BE #BE3068 #AFBE30 #30BE86

split-complementary

#3F30BE #BE8630 #68BE30

monochromatic

#1F175C #2F248D #3F30BE #6457D4 #9188E1

Accessibility & contrast

On white

8.83

#3F30BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#3F30BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F30BE

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F30BE	#FFFFFF	#000000	##FFFFFF
##3F30BE	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050C2

Deuteranopia (green-blind)

#0044BB

Tritanopia (blue-blind)

#005975

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f30be;
/* rgb */ color: rgb(63, 48, 190);
/* oklch */ color: oklch(43.1% 0.209 277.7);

Tailwind

colors: {
  custom: {
    50: '#856bd3',
    500: '#3f30be',
    950: '#000000',
  },
}

SCSS

$custom: #3f30be;
$custom-light: #856bd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f30be",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 190
  },
  "hsl": {
    "h": 246.338,
    "s": 59.664,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43107,
    "c": 0.20897,
    "h": 277.7
  },
  "luminance": 0.06888
}

Semantic roles & 50–950 ramp

primary

#3F30BE

secondary

#C3CB7F

accent

#E345D2

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0D0714

muted

#7D7A83

Preview Lab

Preview with #3F30BE

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

Preview Lab → · Contrast checker → · Palette generator →