#3F4DA9#3F4DA9

#3F4DA9 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.1% C 0.147 H 272.7°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DA9
RGB	rgb(63, 77, 169)
HSL	hsl(232, 46%, 45%)
HSV	hsv(232, 63%, 66%)
CMYK	cmyk(62.7%, 54.4%, 0%, 33.7%)
CIE-LAB	lab(36.42, 23.93, -51.27)
CIE-LCH	lch(36.42, 56.58, 295.02°)
OKLab	oklab(46.11% 0.0071 -0.1471)
OKLCH	oklch(46.11% 0.147 272.7)
XYZ	xyz(11.8628, 9.2281, 38.6845)
Luminance	0.0923 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DA9 #A99B3F

analogous

#3F82A9 #3F4DA9 #663FA9

triadic

#3F4DA9 #A93F4D #4DA93F

tetradic

#3F4DA9 #A93F82 #A99B3F #3FA966

square

#3F4DA9 #A93F82 #A99B3F #3FA966

split-complementary

#3F4DA9 #A9663F #82A93F

monochromatic

#1E2450 #2E397C #3F4DA9 #616EC4 #8E97D5

Accessibility & contrast

On white

7.38

#3F4DA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#3F4DA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4DA9

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DA9	#FFFFFF	#000000	##FFFFFF
##3F4DA9	1.00	7.38	2.85	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E5AAC

Deuteranopia (green-blind)

#0051A7

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f4da9;
/* rgb */ color: rgb(63, 77, 169);
/* oklch */ color: oklch(46.1% 0.147 272.7);

Tailwind

colors: {
  custom: {
    50: '#7f7ec3',
    500: '#3f4da9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4da9;
$custom-light: #7f7ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4da9",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 169
  },
  "hsl": {
    "h": 232.075,
    "s": 45.69,
    "l": 45.49
  },
  "oklch": {
    "l": 0.4611,
    "c": 0.1473,
    "h": 272.7
  },
  "luminance": 0.09229
}

Semantic roles & 50–950 ramp

primary

#3F4DA9

secondary

#C0B884

accent

#C452D5

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4DA9

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

Preview Lab → · Contrast checker → · Palette generator →