#3F4CB7#3F4CB7

#3F4CB7 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 47.0% C 0.168 H 272.9°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CB7
RGB	rgb(63, 76, 183)
HSL	hsl(234, 49%, 48%)
HSV	hsv(234, 66%, 72%)
CMYK	cmyk(65.6%, 58.5%, 0%, 28.2%)
CIE-LAB	lab(37.19, 29.50, -58.31)
CIE-LCH	lch(37.19, 65.35, 296.84°)
OKLab	oklab(47.02% 0.0084 -0.1678)
OKLCH	oklch(47.02% 0.168 272.9)
XYZ	xyz(13.1787, 9.6434, 45.9574)
Luminance	0.0964 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CB7 #B7AA3F

analogous

#3F88B7 #3F4CB7 #6E3FB7

triadic

#3F4CB7 #B73F4C #4CB73F

tetradic

#3F4CB7 #B73F88 #B7AA3F #3FB76E

square

#3F4CB7 #B73F88 #B7AA3F #3FB76E

split-complementary

#3F4CB7 #B76E3F #88B73F

monochromatic

#20265C #2F3989 #3F4CB7 #6873CB #969DDB

Accessibility & contrast

On white

7.17

#3F4CB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#3F4CB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4CB7

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CB7	#FFFFFF	#000000	##FFFFFF
##3F4CB7	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBB

Deuteranopia (green-blind)

#0052B5

Tritanopia (blue-blind)

#00667A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4cb7;
/* rgb */ color: rgb(63, 76, 183);
/* oklch */ color: oklch(47.0% 0.168 272.9);

Tailwind

colors: {
  custom: {
    50: '#827ecd',
    500: '#3f4cb7',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cb7;
$custom-light: #827ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cb7",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 183
  },
  "hsl": {
    "h": 233.5,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.47016,
    "c": 0.16805,
    "h": 272.9
  },
  "luminance": 0.09645
}

Semantic roles & 50–950 ramp

primary

#3F4CB7

secondary

#C6C08B

accent

#CA4FD8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F4CB7

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

Preview Lab → · Contrast checker → · Palette generator →