#3F4DBE#3F4DBE

#3F4DBE is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.8% C 0.176 H 272.5°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F4DBE
RGB	rgb(63, 77, 190)
HSL	hsl(233, 50%, 50%)
HSV	hsv(233, 67%, 75%)
CMYK	cmyk(66.8%, 59.5%, 0%, 25.5%)
CIE-LAB	lab(37.99, 31.32, -61.13)
CIE-LCH	lch(37.99, 68.69, 297.13°)
OKLab	oklab(47.77% 0.0076 -0.1761)
OKLCH	oklch(47.77% 0.176 272.5)
XYZ	xyz(13.9949, 10.0809, 49.9135)
Luminance	0.1008 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4DBE #BEB03F

analogous

#3F8DBE #3F4DBE #713FBE

triadic

#3F4DBE #BE3F4D #4DBE3F

tetradic

#3F4DBE #BE3F8D #BEB03F #3FBE71

square

#3F4DBE #BE3F8D #BEB03F #3FBE71

split-complementary

#3F4DBE #BE713F #8DBE3F

monochromatic

#212862 #303A90 #3F4DBE #6C77CE #9AA1DD

Accessibility & contrast

On white

6.96

#3F4DBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#3F4DBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4DBE

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4DBE	#FFFFFF	#000000	##FFFFFF
##3F4DBE	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FC2

Deuteranopia (green-blind)

#0054BC

Tritanopia (blue-blind)

#00697E

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4dbe;
/* rgb */ color: rgb(63, 77, 190);
/* oklch */ color: oklch(47.8% 0.176 272.5);

Tailwind

colors: {
  custom: {
    50: '#837ed2',
    500: '#3f4dbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f4dbe;
$custom-light: #837ed2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4dbe",
  "rgb": {
    "r": 63,
    "g": 77,
    "b": 190
  },
  "hsl": {
    "h": 233.386,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.47774,
    "c": 0.17628,
    "h": 272.5
  },
  "luminance": 0.10082
}

Semantic roles & 50–950 ramp

primary

#3F4DBE

secondary

#C9C38F

accent

#CA4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3F4DBE

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

Preview Lab → · Contrast checker → · Palette generator →