#3F4DB2#3F4DB2

#3F4DB2 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.8% C 0.160 H 272.7°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DB2
RGB	rgb(63, 77, 178)
HSL	hsl(233, 48%, 47%)
HSV	hsv(233, 65%, 70%)
CMYK	cmyk(64.6%, 56.7%, 0%, 30.2%)
CIE-LAB	lab(37.07, 27.10, -55.56)
CIE-LCH	lch(37.07, 61.81, 296.00°)
OKLab	oklab(46.81% 0.0074 -0.1597)
OKLCH	oklch(46.81% 0.16 272.7)
XYZ	xyz(12.7370, 9.5778, 43.2883)
Luminance	0.0958 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DB2 #B2A43F

analogous

#3F86B2 #3F4DB2 #6B3FB2

triadic

#3F4DB2 #B23F4D #4DB23F

tetradic

#3F4DB2 #B23F86 #B2A43F #3FB26B

square

#3F4DB2 #B23F86 #B2A43F #3FB26B

split-complementary

#3F4DB2 #B26B3F #86B23F

monochromatic

#1F2658 #2F3985 #3F4DB2 #6672C9 #939BD9

Accessibility & contrast

On white

7.20

#3F4DB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#3F4DB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4DB2

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DB2	#FFFFFF	#000000	##FFFFFF
##3F4DB2	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB5

Deuteranopia (green-blind)

#0052B0

Tritanopia (blue-blind)

#006578

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4db2;
/* rgb */ color: rgb(63, 77, 178);
/* oklch */ color: oklch(46.8% 0.160 272.7);

Tailwind

colors: {
  custom: {
    50: '#817eca',
    500: '#3f4db2',
    950: '#000000',
  },
}

SCSS

$custom: #3f4db2;
$custom-light: #817eca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4db2",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 178
  },
  "hsl": {
    "h": 232.696,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.46807,
    "c": 0.1599,
    "h": 272.7
  },
  "luminance": 0.09579
}

Semantic roles & 50–950 ramp

primary

#3F4DB2

secondary

#C4BD89

accent

#C750D7

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4DB2

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

Preview Lab → · Contrast checker → · Palette generator →