#3F30BF#3F30BF

#3F30BF is a dark, highly saturated blue. Relative luminance 0.069; OKLCH L 43.2% C 0.210 H 277.6°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F30BF
RGB	rgb(63, 48, 191)
HSL	hsl(246, 60%, 47%)
HSV	hsv(246, 75%, 75%)
CMYK	cmyk(67%, 74.9%, 0%, 25.1%)
CIE-LAB	lab(31.65, 48.94, -72.10)
CIE-LCH	lch(31.65, 87.14, 304.16°)
OKLab	oklab(43.21% 0.028 -0.2083)
OKLCH	oklch(43.21% 0.21 277.6)
XYZ	xyz(12.5078, 6.9312, 49.9588)
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

#3F30BF #B0BF30

analogous

#3068BF #3F30BF #8730BF

triadic

#3F30BF #BF3F30 #30BF3F

tetradic

#3F30BF #BF3068 #B0BF30 #30BF87

square

#3F30BF #BF3068 #B0BF30 #30BF87

split-complementary

#3F30BF #BF8730 #68BF30

monochromatic

#1F175D #2F248E #3F30BF #6557D5 #9288E1

Accessibility & contrast

On white

8.80

#3F30BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3F30BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F30BF

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F30BF	#FFFFFF	#000000	##FFFFFF
##3F30BF	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)

#0050C3

Deuteranopia (green-blind)

#0044BC

Tritanopia (blue-blind)

#005975

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f30bf;
/* rgb */ color: rgb(63, 48, 191);
/* oklch */ color: oklch(43.2% 0.210 277.6);

Tailwind

colors: {
  custom: {
    50: '#856bd4',
    500: '#3f30bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f30bf;
$custom-light: #856bd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f30bf",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 191
  },
  "hsl": {
    "h": 246.294,
    "s": 59.833,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43208,
    "c": 0.21016,
    "h": 277.6
  },
  "luminance": 0.06932
}

Semantic roles & 50–950 ramp

primary

#3F30BF

secondary

#C3CB80

accent

#E345D2

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0D0714

muted

#7D7A83

Preview Lab

Preview with #3F30BF

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

Preview Lab → · Contrast checker → · Palette generator →