#3949B7#3949B7

#3949B7 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.1% C 0.173 H 271.5°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#3949B7
RGB	rgb(57, 73, 183)
HSL	hsl(232, 53%, 47%)
HSV	hsv(232, 69%, 72%)
CMYK	cmyk(68.9%, 60.1%, 0%, 28.2%)
CIE-LAB	lab(36.09, 30.54, -60.13)
CIE-LCH	lch(36.09, 67.44, 296.92°)
OKLab	oklab(46.1% 0.0045 -0.1734)
OKLCH	oklch(46.1% 0.173 271.5)
XYZ	xyz(12.6142, 9.0526, 45.8731)
Luminance	0.0905 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3949B7 #B7A739

analogous

#3988B7 #3949B7 #6839B7

triadic

#3949B7 #B73949 #49B739

tetradic

#3949B7 #B73988 #B7A739 #39B768

square

#3949B7 #B73988 #B7A739 #39B768

split-complementary

#3949B7 #B76839 #88B739

monochromatic

#1C245A #2A3688 #3949B7 #606ECD #8E98DC

Accessibility & contrast

On white

7.47

#3949B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#3949B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3949B7

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3949B7	#FFFFFF	#000000	##FFFFFF
##3949B7	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBB

Deuteranopia (green-blind)

#004FB5

Tritanopia (blue-blind)

#006479

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3949b7;
/* rgb */ color: rgb(57, 73, 183);
/* oklch */ color: oklch(46.1% 0.173 271.5);

Tailwind

colors: {
  custom: {
    50: '#7f7bcd',
    500: '#3949b7',
    950: '#000000',
  },
}

SCSS

$custom: #3949b7;
$custom-light: #7f7bcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3949b7",
  "rgb": {
    "r": 57,
    "g": 73,
    "b": 183
  },
  "hsl": {
    "h": 232.381,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.46099,
    "c": 0.17342,
    "h": 271.5
  },
  "luminance": 0.09054
}

Semantic roles & 50–950 ramp

primary

#3949B7

secondary

#C7BE85

accent

#CA4CDC

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3949B7

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

Preview Lab → · Contrast checker → · Palette generator →