#3F4CBE#3F4CBE

#3F4CBE is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.6% C 0.178 H 272.7°. Best body text is #FFFFFF at 7.03:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CBE
RGB	rgb(63, 76, 190)
HSL	hsl(234, 50%, 50%)
HSV	hsv(234, 67%, 75%)
CMYK	cmyk(66.8%, 60%, 0%, 25.5%)
CIE-LAB	lab(37.74, 31.96, -61.54)
CIE-LCH	lch(37.74, 69.34, 297.45°)
OKLab	oklab(47.59% 0.0084 -0.1773)
OKLCH	oklch(47.59% 0.178 272.7)
XYZ	xyz(13.9255, 9.9421, 49.8904)
Luminance	0.0994 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.92

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CBE #BEB13F

analogous

#3F8CBE #3F4CBE #713FBE

triadic

#3F4CBE #BE3F4C #4CBE3F

tetradic

#3F4CBE #BE3F8C #BEB13F #3FBE71

square

#3F4CBE #BE3F8C #BEB13F #3FBE71

split-complementary

#3F4CBE #BE713F #8CBE3F

monochromatic

#212762 #303A90 #3F4CBE #6C76CE #9AA1DD

Accessibility & contrast

On white

7.03

#3F4CBE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.99

#3F4CBE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4CBE

7.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CBE	#FFFFFF	#000000	##FFFFFF
##3F4CBE	1.00	7.03	2.99	7.03
#FFFFFF	7.03	1.00	21.00	1.00
#000000	2.99	21.00	1.00	21.00
##FFFFFF	7.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FC2

Deuteranopia (green-blind)

#0053BC

Tritanopia (blue-blind)

#00687D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4cbe;
/* rgb */ color: rgb(63, 76, 190);
/* oklch */ color: oklch(47.6% 0.178 272.7);

Tailwind

colors: {
  custom: {
    50: '#837ed2',
    500: '#3f4cbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cbe;
$custom-light: #837ed2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cbe",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 190
  },
  "hsl": {
    "h": 233.858,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.4759,
    "c": 0.17752,
    "h": 272.7
  },
  "luminance": 0.09943
}

Semantic roles & 50–950 ramp

primary

#3F4CBE

secondary

#C9C38F

accent

#CB4EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F4CBE

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

Preview Lab → · Contrast checker → · Palette generator →