#3F4FB6#3F4FB6

#3F4FB6 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.5% C 0.163 H 272.0°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FB6
RGB	rgb(63, 79, 182)
HSL	hsl(232, 49%, 48%)
HSV	hsv(232, 65%, 71%)
CMYK	cmyk(65.4%, 56.6%, 0%, 28.6%)
CIE-LAB	lab(37.89, 27.22, -56.60)
CIE-LCH	lch(37.89, 62.80, 295.69°)
OKLab	oklab(47.51% 0.0058 -0.1628)
OKLCH	oklch(47.51% 0.163 272)
XYZ	xyz(13.2865, 10.0249, 45.4817)
Luminance	0.1003 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FB6 #B6A63F

analogous

#3F8AB6 #3F4FB6 #6B3FB6

triadic

#3F4FB6 #B63F4F #4FB63F

tetradic

#3F4FB6 #B63F8A #B6A63F #3FB66B

square

#3F4FB6 #B63F8A #B6A63F #3FB66B

split-complementary

#3F4FB6 #B66B3F #8AB63F

monochromatic

#20285B #2F3B89 #3F4FB6 #6875CB #959EDA

Accessibility & contrast

On white

6.99

#3F4FB6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#3F4FB6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4FB6

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FB6	#FFFFFF	#000000	##FFFFFF
##3F4FB6	1.00	6.99	3.01	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBA

Deuteranopia (green-blind)

#0054B4

Tritanopia (blue-blind)

#00687B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4fb6;
/* rgb */ color: rgb(63, 79, 182);
/* oklch */ color: oklch(47.5% 0.163 272.0);

Tailwind

colors: {
  custom: {
    50: '#8180cd',
    500: '#3f4fb6',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fb6;
$custom-light: #8180cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fb6",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 182
  },
  "hsl": {
    "h": 231.933,
    "s": 48.571,
    "l": 48.039
  },
  "oklch": {
    "l": 0.47509,
    "c": 0.16287,
    "h": 272
  },
  "luminance": 0.10026
}

Semantic roles & 50–950 ramp

primary

#3F4FB6

secondary

#C6BE8B

accent

#C650D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4FB6

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

Preview Lab → · Contrast checker → · Palette generator →