#3949B5#3949B5

#3949B5 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.9% C 0.171 H 271.5°. Best body text is #FFFFFF at 7.52:1 contrast (WCAG AA passes).

Color values

HEX	#3949B5
RGB	rgb(57, 73, 181)
HSL	hsl(232, 52%, 47%)
HSV	hsv(232, 69%, 71%)
CMYK	cmyk(68.5%, 59.7%, 0%, 29%)
CIE-LAB	lab(35.93, 29.82, -59.21)
CIE-LCH	lch(35.93, 66.29, 296.73°)
OKLab	oklab(45.93% 0.0045 -0.1707)
OKLCH	oklch(45.93% 0.171 271.5)
XYZ	xyz(12.4076, 8.9700, 44.7846)
Luminance	0.0897 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3949B5 #B5A539

analogous

#3987B5 #3949B5 #6739B5

triadic

#3949B5 #B53949 #49B539

tetradic

#3949B5 #B53987 #B5A539 #39B567

square

#3949B5 #B53987 #B5A539 #39B567

split-complementary

#3949B5 #B56739 #87B539

monochromatic

#1C2358 #2A3686 #3949B5 #5F6DCD #8D97DB

Accessibility & contrast

On white

7.52

#3949B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#3949B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3949B5

7.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3949B5	#FFFFFF	#000000	##FFFFFF
##3949B5	1.00	7.52	2.79	7.52
#FFFFFF	7.52	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AB9

Deuteranopia (green-blind)

#004FB3

Tritanopia (blue-blind)

#006478

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3949b5;
/* rgb */ color: rgb(57, 73, 181);
/* oklch */ color: oklch(45.9% 0.171 271.5);

Tailwind

colors: {
  custom: {
    50: '#7f7bcc',
    500: '#3949b5',
    950: '#000000',
  },
}

SCSS

$custom: #3949b5;
$custom-light: #7f7bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3949b5",
  "rgb": {
    "r": 57,
    "g": 73,
    "b": 181
  },
  "hsl": {
    "h": 232.258,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.45931,
    "c": 0.17072,
    "h": 271.5
  },
  "luminance": 0.08971
}

Semantic roles & 50–950 ramp

primary

#3949B5

secondary

#C6BD84

accent

#C94CDC

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3949B5

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

Preview Lab → · Contrast checker → · Palette generator →