#3F4EBA#3F4EBA

#3F4EBA is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.6% C 0.170 H 272.3°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EBA
RGB	rgb(63, 78, 186)
HSL	hsl(233, 49%, 49%)
HSV	hsv(233, 66%, 73%)
CMYK	cmyk(66.1%, 58.1%, 0%, 27.1%)
CIE-LAB	lab(37.93, 29.28, -58.88)
CIE-LCH	lch(37.93, 65.75, 296.44°)
OKLab	oklab(47.64% 0.0067 -0.1695)
OKLCH	oklch(47.64% 0.17 272.3)
XYZ	xyz(13.6342, 10.0495, 47.6661)
Luminance	0.1005 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EBA #BAAB3F

analogous

#3F8CBA #3F4EBA #6E3FBA

triadic

#3F4EBA #BA3F4E #4EBA3F

tetradic

#3F4EBA #BA3F8C #BAAB3F #3FBA6E

square

#3F4EBA #BA3F8C #BAAB3F #3FBA6E

split-complementary

#3F4EBA #BA6E3F #8CBA3F

monochromatic

#20285F #303B8C #3F4EBA #6A76CC #97A0DC

Accessibility & contrast

On white

6.98

#3F4EBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#3F4EBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4EBA

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EBA	#FFFFFF	#000000	##FFFFFF
##3F4EBA	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBE

Deuteranopia (green-blind)

#0054B8

Tritanopia (blue-blind)

#00687C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4eba;
/* rgb */ color: rgb(63, 78, 186);
/* oklch */ color: oklch(47.6% 0.170 272.3);

Tailwind

colors: {
  custom: {
    50: '#827fd0',
    500: '#3f4eba',
    950: '#000000',
  },
}

SCSS

$custom: #3f4eba;
$custom-light: #827fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4eba",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 186
  },
  "hsl": {
    "h": 232.683,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.47636,
    "c": 0.16961,
    "h": 272.3
  },
  "luminance": 0.10051
}

Semantic roles & 50–950 ramp

primary

#3F4EBA

secondary

#C8C18D

accent

#C84FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #3F4EBA

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

Preview Lab → · Contrast checker → · Palette generator →