#3945B5#3945B5

#3945B5 is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.2% C 0.176 H 272.5°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#3945B5
RGB	rgb(57, 69, 181)
HSL	hsl(234, 52%, 47%)
HSV	hsv(234, 69%, 71%)
CMYK	cmyk(68.5%, 61.9%, 0%, 29%)
CIE-LAB	lab(34.93, 32.39, -60.84)
CIE-LCH	lch(34.93, 68.92, 298.03°)
OKLab	oklab(45.19% 0.0077 -0.1755)
OKLCH	oklch(45.19% 0.176 272.5)
XYZ	xyz(12.1532, 8.4612, 44.6998)
Luminance	0.0846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3945B5 #B5A939

analogous

#3983B5 #3945B5 #6B39B5

triadic

#3945B5 #B53945 #45B539

tetradic

#3945B5 #B53983 #B5A939 #39B56B

square

#3945B5 #B53983 #B5A939 #39B56B

split-complementary

#3945B5 #B56B39 #83B539

monochromatic

#1C2258 #2A3386 #3945B5 #5F69CD #8D95DB

Accessibility & contrast

On white

7.80

#3945B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3945B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3945B5

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3945B5	#FFFFFF	#000000	##FFFFFF
##3945B5	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B9

Deuteranopia (green-blind)

#004DB3

Tritanopia (blue-blind)

#006176

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3945b5;
/* rgb */ color: rgb(57, 69, 181);
/* oklch */ color: oklch(45.2% 0.176 272.5);

Tailwind

colors: {
  custom: {
    50: '#7f78cc',
    500: '#3945b5',
    950: '#000000',
  },
}

SCSS

$custom: #3945b5;
$custom-light: #7f78cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3945b5",
  "rgb": {
    "r": 57,
    "g": 69,
    "b": 181
  },
  "hsl": {
    "h": 234.194,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.45191,
    "c": 0.17566,
    "h": 272.5
  },
  "luminance": 0.08462
}

Semantic roles & 50–950 ramp

primary

#3945B5

secondary

#C6BF84

accent

#CE4CDC

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3945B5

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

Preview Lab → · Contrast checker → · Palette generator →