#3949B8#3949B8

#3949B8 is a mid, vivid blue. Relative luminance 0.091; OKLCH L 46.2% C 0.175 H 271.5°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#3949B8
RGB	rgb(57, 73, 184)
HSL	hsl(232, 53%, 47%)
HSV	hsv(232, 69%, 72%)
CMYK	cmyk(69%, 60.3%, 0%, 27.8%)
CIE-LAB	lab(36.17, 30.89, -60.59)
CIE-LCH	lch(36.17, 68.01, 297.02°)
OKLab	oklab(46.18% 0.0045 -0.1747)
OKLCH	oklch(46.18% 0.175 271.5)
XYZ	xyz(12.7187, 9.0944, 46.4232)
Luminance	0.0910 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3949B8 #B8A839

analogous

#3989B8 #3949B8 #6939B8

triadic

#3949B8 #B83949 #49B839

tetradic

#3949B8 #B83989 #B8A839 #39B869

square

#3949B8 #B83989 #B8A839 #39B869

split-complementary

#3949B8 #B86939 #89B839

monochromatic

#1C245B #2B3689 #3949B8 #606ECE #8F99DC

Accessibility & contrast

On white

7.45

#3949B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#3949B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3949B8

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3949B8	#FFFFFF	#000000	##FFFFFF
##3949B8	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBC

Deuteranopia (green-blind)

#004FB6

Tritanopia (blue-blind)

#006579

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3949b8;
/* rgb */ color: rgb(57, 73, 184);
/* oklch */ color: oklch(46.2% 0.175 271.5);

Tailwind

colors: {
  custom: {
    50: '#7f7bce',
    500: '#3949b8',
    950: '#000000',
  },
}

SCSS

$custom: #3949b8;
$custom-light: #7f7bce;
$custom-dark: #000000;

JSON

{
  "hex": "#3949b8",
  "rgb": {
    "r": 57,
    "g": 73,
    "b": 184
  },
  "hsl": {
    "h": 232.441,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.46183,
    "c": 0.17477,
    "h": 271.5
  },
  "luminance": 0.09096
}

Semantic roles & 50–950 ramp

primary

#3949B8

secondary

#C7BF86

accent

#CA4CDC

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3949B8

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

Preview Lab → · Contrast checker → · Palette generator →