#3F4EB9#3F4EB9

#3F4EB9 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.6% C 0.168 H 272.3°. Best body text is #FFFFFF at 7.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EB9
RGB	rgb(63, 78, 185)
HSL	hsl(233, 49%, 49%)
HSV	hsv(233, 66%, 73%)
CMYK	cmyk(65.9%, 57.8%, 0%, 27.5%)
CIE-LAB	lab(37.86, 28.92, -58.41)
CIE-LCH	lch(37.86, 65.18, 296.34°)
OKLab	oklab(47.56% 0.0067 -0.1681)
OKLCH	oklch(47.56% 0.168 272.3)
XYZ	xyz(13.5283, 10.0071, 47.1082)
Luminance	0.1001 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EB9 #B9AA3F

analogous

#3F8BB9 #3F4EB9 #6D3FB9

triadic

#3F4EB9 #B93F4E #4EB93F

tetradic

#3F4EB9 #B93F8B #B9AA3F #3FB96D

square

#3F4EB9 #B93F8B #B9AA3F #3FB96D

split-complementary

#3F4EB9 #B96D3F #8BB93F

monochromatic

#20285E #2F3B8B #3F4EB9 #6975CC #979FDC

Accessibility & contrast

On white

7.00

#3F4EB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#3F4EB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4EB9

7.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EB9	#FFFFFF	#000000	##FFFFFF
##3F4EB9	1.00	7.00	3.00	7.00
#FFFFFF	7.00	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FBD

Deuteranopia (green-blind)

#0054B7

Tritanopia (blue-blind)

#00687C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f4eb9;
/* rgb */ color: rgb(63, 78, 185);
/* oklch */ color: oklch(47.6% 0.168 272.3);

Tailwind

colors: {
  custom: {
    50: '#827fcf',
    500: '#3f4eb9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4eb9;
$custom-light: #827fcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4eb9",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 185
  },
  "hsl": {
    "h": 232.623,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.47556,
    "c": 0.16825,
    "h": 272.3
  },
  "luminance": 0.10008
}

Semantic roles & 50–950 ramp

primary

#3F4EB9

secondary

#C7C08D

accent

#C84FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #3F4EB9

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

Preview Lab → · Contrast checker → · Palette generator →