#3945B8#3945B8

#3945B8 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.5% C 0.180 H 272.4°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#3945B8
RGB	rgb(57, 69, 184)
HSL	hsl(234, 53%, 47%)
HSV	hsv(234, 69%, 72%)
CMYK	cmyk(69%, 62.5%, 0%, 27.8%)
CIE-LAB	lab(35.17, 33.45, -62.21)
CIE-LCH	lch(35.17, 70.63, 298.27°)
OKLab	oklab(45.45% 0.0076 -0.1795)
OKLCH	oklch(45.45% 0.18 272.4)
XYZ	xyz(12.4643, 8.5856, 46.3384)
Luminance	0.0859 (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

#3945B8 #B8AC39

analogous

#3984B8 #3945B8 #6D39B8

triadic

#3945B8 #B83945 #45B839

tetradic

#3945B8 #B83984 #B8AC39 #39B86D

square

#3945B8 #B83984 #B8AC39 #39B86D

split-complementary

#3945B8 #B86D39 #84B839

monochromatic

#1C225B #2B3389 #3945B8 #606BCE #8F96DC

Accessibility & contrast

On white

7.73

#3945B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#3945B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3945B8

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3945B8	#FFFFFF	#000000	##FFFFFF
##3945B8	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BC

Deuteranopia (green-blind)

#004DB6

Tritanopia (blue-blind)

#006278

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3945b8;
/* rgb */ color: rgb(57, 69, 184);
/* oklch */ color: oklch(45.5% 0.180 272.4);

Tailwind

colors: {
  custom: {
    50: '#8078ce',
    500: '#3945b8',
    950: '#000000',
  },
}

SCSS

$custom: #3945b8;
$custom-light: #8078ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3945b8",
  "rgb": {
    "r": 57,
    "g": 69,
    "b": 184
  },
  "hsl": {
    "h": 234.331,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.45451,
    "c": 0.17966,
    "h": 272.4
  },
  "luminance": 0.08587
}

Semantic roles & 50–950 ramp

primary

#3945B8

secondary

#C7C186

accent

#CE4CDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3945B8

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

Preview Lab → · Contrast checker → · Palette generator →