#3F4AB9#3F4AB9

#3F4AB9 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.8% C 0.173 H 273.4°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#3F4AB9
RGB	rgb(63, 74, 185)
HSL	hsl(235, 49%, 49%)
HSV	hsv(235, 66%, 73%)
CMYK	cmyk(65.9%, 60%, 0%, 27.5%)
CIE-LAB	lab(36.85, 31.48, -60.05)
CIE-LCH	lch(36.85, 67.80, 297.67°)
OKLab	oklab(46.81% 0.0101 -0.173)
OKLCH	oklch(46.81% 0.173 273.4)
XYZ	xyz(13.2527, 9.4559, 47.0163)
Luminance	0.0946 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4AB9 #B9AE3F

analogous

#3F87B9 #3F4AB9 #713FB9

triadic

#3F4AB9 #B93F4A #4AB93F

tetradic

#3F4AB9 #B93F87 #B9AE3F #3FB971

square

#3F4AB9 #B93F87 #B9AE3F #3FB971

split-complementary

#3F4AB9 #B9713F #87B93F

monochromatic

#20255E #2F388B #3F4AB9 #6972CC #979DDC

Accessibility & contrast

On white

7.26

#3F4AB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#3F4AB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4AB9

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4AB9	#FFFFFF	#000000	##FFFFFF
##3F4AB9	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBD

Deuteranopia (green-blind)

#0051B7

Tritanopia (blue-blind)

#00657A

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4ab9;
/* rgb */ color: rgb(63, 74, 185);
/* oklch */ color: oklch(46.8% 0.173 273.4);

Tailwind

colors: {
  custom: {
    50: '#827ccf',
    500: '#3f4ab9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4ab9;
$custom-light: #827ccf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4ab9",
  "rgb": {
    "r": 63,
    "g": 74,
    "b": 185
  },
  "hsl": {
    "h": 234.59,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.46807,
    "c": 0.17328,
    "h": 273.4
  },
  "luminance": 0.09457
}

Semantic roles & 50–950 ramp

primary

#3F4AB9

secondary

#C7C28D

accent

#CC4FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F4AB9

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

Preview Lab → · Contrast checker → · Palette generator →