#3F4DB6#3F4DB6

#3F4DB6 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.1% C 0.165 H 272.6°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DB6
RGB	rgb(63, 77, 182)
HSL	hsl(233, 49%, 48%)
HSV	hsv(233, 65%, 71%)
CMYK	cmyk(65.4%, 57.7%, 0%, 28.6%)
CIE-LAB	lab(37.37, 28.51, -57.43)
CIE-LCH	lch(37.37, 64.12, 296.40°)
OKLab	oklab(47.13% 0.0075 -0.1652)
OKLCH	oklch(47.13% 0.165 272.6)
XYZ	xyz(13.1445, 9.7408, 45.4344)
Luminance	0.0974 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DB6 #B6A83F

analogous

#3F88B6 #3F4DB6 #6C3FB6

triadic

#3F4DB6 #B63F4D #4DB63F

tetradic

#3F4DB6 #B63F88 #B6A83F #3FB66C

square

#3F4DB6 #B63F88 #B6A83F #3FB66C

split-complementary

#3F4DB6 #B66C3F #88B63F

monochromatic

#20275B #2F3A89 #3F4DB6 #6873CB #959DDA

Accessibility & contrast

On white

7.12

#3F4DB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3F4DB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4DB6

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DB6	#FFFFFF	#000000	##FFFFFF
##3F4DB6	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBA

Deuteranopia (green-blind)

#0053B4

Tritanopia (blue-blind)

#00667A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4db6;
/* rgb */ color: rgb(63, 77, 182);
/* oklch */ color: oklch(47.1% 0.165 272.6);

Tailwind

colors: {
  custom: {
    50: '#817ecd',
    500: '#3f4db6',
    950: '#000000',
  },
}

SCSS

$custom: #3f4db6;
$custom-light: #817ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4db6",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 182
  },
  "hsl": {
    "h": 232.941,
    "s": 48.571,
    "l": 48.039
  },
  "oklch": {
    "l": 0.47125,
    "c": 0.16541,
    "h": 272.6
  },
  "luminance": 0.09742
}

Semantic roles & 50–950 ramp

primary

#3F4DB6

secondary

#C6BF8B

accent

#C850D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #3F4DB6

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

Preview Lab → · Contrast checker → · Palette generator →