#3945B3#3945B3

#3945B3 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.0% C 0.173 H 272.6°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#3945B3
RGB	rgb(57, 69, 179)
HSL	hsl(234, 52%, 46%)
HSV	hsv(234, 68%, 70%)
CMYK	cmyk(68.2%, 61.5%, 0%, 29.8%)
CIE-LAB	lab(34.76, 31.68, -59.92)
CIE-LCH	lch(34.76, 67.78, 297.86°)
OKLab	oklab(45.02% 0.0078 -0.1728)
OKLCH	oklch(45.02% 0.173 272.6)
XYZ	xyz(11.9494, 8.3797, 43.6268)
Luminance	0.0838 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3945B3 #B3A739

analogous

#3982B3 #3945B3 #6A39B3

triadic

#3945B3 #B33945 #45B339

tetradic

#3945B3 #B33982 #B3A739 #39B36A

square

#3945B3 #B33982 #B3A739 #39B36A

split-complementary

#3945B3 #B36A39 #82B339

monochromatic

#1B2156 #2A3385 #3945B3 #5E68CC #8C94DA

Accessibility & contrast

On white

7.85

#3945B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#3945B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3945B3

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3945B3	#FFFFFF	#000000	##FFFFFF
##3945B3	1.00	7.85	2.68	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B7

Deuteranopia (green-blind)

#004CB1

Tritanopia (blue-blind)

#006175

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3945b3;
/* rgb */ color: rgb(57, 69, 179);
/* oklch */ color: oklch(45.0% 0.173 272.6);

Tailwind

colors: {
  custom: {
    50: '#7f78cb',
    500: '#3945b3',
    950: '#000000',
  },
}

SCSS

$custom: #3945b3;
$custom-light: #7f78cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3945b3",
  "rgb": {
    "r": 57,
    "g": 69,
    "b": 179
  },
  "hsl": {
    "h": 234.098,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.45019,
    "c": 0.17297,
    "h": 272.6
  },
  "luminance": 0.08381
}

Semantic roles & 50–950 ramp

primary

#3945B3

secondary

#C5BE83

accent

#CD4DDB

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3945B3

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

Preview Lab → · Contrast checker → · Palette generator →