#3949B9#3949B9

#3949B9 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.3% C 0.176 H 271.5°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#3949B9
RGB	rgb(57, 73, 185)
HSL	hsl(233, 53%, 47%)
HSV	hsv(233, 69%, 73%)
CMYK	cmyk(69.2%, 60.5%, 0%, 27.5%)
CIE-LAB	lab(36.25, 31.25, -61.05)
CIE-LCH	lch(36.25, 68.58, 297.11°)
OKLab	oklab(46.27% 0.0045 -0.1761)
OKLCH	oklch(46.27% 0.176 271.5)
XYZ	xyz(12.8239, 9.1365, 46.9772)
Luminance	0.0914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3949B9 #B9A939

analogous

#3989B9 #3949B9 #6939B9

triadic

#3949B9 #B93949 #49B939

tetradic

#3949B9 #B93989 #B9A939 #39B969

square

#3949B9 #B93989 #B9A939 #39B969

split-complementary

#3949B9 #B96939 #89B939

monochromatic

#1C245B #2B378A #3949B9 #616FCE #9099DD

Accessibility & contrast

On white

7.43

#3949B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3949B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3949B9

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3949B9	#FFFFFF	#000000	##FFFFFF
##3949B9	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBD

Deuteranopia (green-blind)

#0050B7

Tritanopia (blue-blind)

#00657A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3949b9;
/* rgb */ color: rgb(57, 73, 185);
/* oklch */ color: oklch(46.3% 0.176 271.5);

Tailwind

colors: {
  custom: {
    50: '#807bcf',
    500: '#3949b9',
    950: '#000000',
  },
}

SCSS

$custom: #3949b9;
$custom-light: #807bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3949b9",
  "rgb": {
    "r": 57,
    "g": 73,
    "b": 185
  },
  "hsl": {
    "h": 232.5,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.46268,
    "c": 0.17612,
    "h": 271.5
  },
  "luminance": 0.09138
}

Semantic roles & 50–950 ramp

primary

#3949B9

secondary

#C8BF86

accent

#CA4BDC

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3949B9

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

Preview Lab → · Contrast checker → · Palette generator →