#3F4DB7#3F4DB7

#3F4DB7 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.2% C 0.167 H 272.6°. Best body text is #FFFFFF at 7.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DB7
RGB	rgb(63, 77, 183)
HSL	hsl(233, 49%, 48%)
HSV	hsv(233, 66%, 72%)
CMYK	cmyk(65.6%, 57.9%, 0%, 28.2%)
CIE-LAB	lab(37.45, 28.86, -57.90)
CIE-LCH	lch(37.45, 64.69, 296.50°)
OKLab	oklab(47.21% 0.0076 -0.1666)
OKLCH	oklch(47.21% 0.167 272.6)
XYZ	xyz(13.2482, 9.7822, 45.9806)
Luminance	0.0978 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DB7 #B7A93F

analogous

#3F89B7 #3F4DB7 #6D3FB7

triadic

#3F4DB7 #B73F4D #4DB73F

tetradic

#3F4DB7 #B73F89 #B7A93F #3FB76D

square

#3F4DB7 #B73F89 #B7A93F #3FB76D

split-complementary

#3F4DB7 #B76D3F #89B73F

monochromatic

#20275C #2F3A89 #3F4DB7 #6874CB #969EDB

Accessibility & contrast

On white

7.10

#3F4DB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#3F4DB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4DB7

7.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DB7	#FFFFFF	#000000	##FFFFFF
##3F4DB7	1.00	7.10	2.96	7.10
#FFFFFF	7.10	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EBB

Deuteranopia (green-blind)

#0053B5

Tritanopia (blue-blind)

#00677A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4db7;
/* rgb */ color: rgb(63, 77, 183);
/* oklch */ color: oklch(47.2% 0.167 272.6);

Tailwind

colors: {
  custom: {
    50: '#827ecd',
    500: '#3f4db7',
    950: '#000000',
  },
}

SCSS

$custom: #3f4db7;
$custom-light: #827ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4db7",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 183
  },
  "hsl": {
    "h": 233,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.47205,
    "c": 0.16678,
    "h": 272.6
  },
  "luminance": 0.09783
}

Semantic roles & 50–950 ramp

primary

#3F4DB7

secondary

#C6BF8B

accent

#C84FD8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #3F4DB7

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

Preview Lab → · Contrast checker → · Palette generator →