#3945A1#3945A1

#3945A1 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.5% C 0.148 H 273.0°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#3945A1
RGB	rgb(57, 69, 161)
HSL	hsl(233, 48%, 43%)
HSV	hsv(233, 65%, 63%)
CMYK	cmyk(64.6%, 57.1%, 0%, 36.9%)
CIE-LAB	lab(33.35, 25.26, -51.47)
CIE-LCH	lch(33.35, 57.34, 296.14°)
OKLab	oklab(43.53% 0.0078 -0.148)
OKLCH	oklch(43.53% 0.148 273)
XYZ	xyz(10.2463, 7.6984, 34.6573)
Luminance	0.0770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3945A1 #A19539

analogous

#3979A1 #3945A1 #6139A1

triadic

#3945A1 #A13945 #45A139

tetradic

#3945A1 #A13979 #A19539 #39A161

square

#3945A1 #A13979 #A19539 #39A161

split-complementary

#3945A1 #A16139 #79A139

monochromatic

#191E47 #293274 #3945A1 #5561C3 #828BD3

Accessibility & contrast

On white

8.27

#3945A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3945A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3945A1

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3945A1	#FFFFFF	#000000	##FFFFFF
##3945A1	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A4

Deuteranopia (green-blind)

#004A9F

Tritanopia (blue-blind)

#005B6C

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3945a1;
/* rgb */ color: rgb(57, 69, 161);
/* oklch */ color: oklch(43.5% 0.148 273.0);

Tailwind

colors: {
  custom: {
    50: '#7b78bd',
    500: '#3945a1',
    950: '#000000',
  },
}

SCSS

$custom: #3945a1;
$custom-light: #7b78bd;
$custom-dark: #000000;

JSON

{
  "hex": "#3945a1",
  "rgb": {
    "r": 57,
    "g": 69,
    "b": 161
  },
  "hsl": {
    "h": 233.077,
    "s": 47.706,
    "l": 42.745
  },
  "oklch": {
    "l": 0.43525,
    "c": 0.14817,
    "h": 273
  },
  "luminance": 0.07699
}

Semantic roles & 50–950 ramp

primary

#3945A1

secondary

#BCB579

accent

#C850D7

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #3945A1

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

Preview Lab → · Contrast checker → · Palette generator →