#3F4EBB#3F4EBB

#3F4EBB is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.7% C 0.171 H 272.3°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EBB
RGB	rgb(63, 78, 187)
HSL	hsl(233, 50%, 49%)
HSV	hsv(233, 66%, 73%)
CMYK	cmyk(66.3%, 58.3%, 0%, 26.7%)
CIE-LAB	lab(38.01, 29.63, -59.34)
CIE-LCH	lch(38.01, 66.33, 296.53°)
OKLab	oklab(47.72% 0.0067 -0.1708)
OKLCH	oklch(47.72% 0.171 272.3)
XYZ	xyz(13.7409, 10.0922, 48.2279)
Luminance	0.1009 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EBB #BBAC3F

analogous

#3F8CBB #3F4EBB #6E3FBB

triadic

#3F4EBB #BB3F4E #4EBB3F

tetradic

#3F4EBB #BB3F8C #BBAC3F #3FBB6E

square

#3F4EBB #BB3F8C #BBAC3F #3FBB6E

split-complementary

#3F4EBB #BB6E3F #8CBB3F

monochromatic

#20285F #303B8D #3F4EBB #6A76CD #98A0DC

Accessibility & contrast

On white

6.96

#3F4EBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#3F4EBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4EBB

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EBB	#FFFFFF	#000000	##FFFFFF
##3F4EBB	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)

#005FBF

Deuteranopia (green-blind)

#0054B9

Tritanopia (blue-blind)

#00697D

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4ebb;
/* rgb */ color: rgb(63, 78, 187);
/* oklch */ color: oklch(47.7% 0.171 272.3);

Tailwind

colors: {
  custom: {
    50: '#827fd0',
    500: '#3f4ebb',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ebb;
$custom-light: #827fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ebb",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 187
  },
  "hsl": {
    "h": 232.742,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.47717,
    "c": 0.17097,
    "h": 272.3
  },
  "luminance": 0.10093
}

Semantic roles & 50–950 ramp

primary

#3F4EBB

secondary

#C8C18E

accent

#C84FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #3F4EBB

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

Preview Lab → · Contrast checker → · Palette generator →