#3945A0#3945A0

#3945A0 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.4% C 0.147 H 273.0°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#3945A0
RGB	rgb(57, 69, 160)
HSL	hsl(233, 47%, 43%)
HSV	hsv(233, 64%, 63%)
CMYK	cmyk(64.4%, 56.9%, 0%, 37.3%)
CIE-LAB	lab(33.27, 24.91, -50.99)
CIE-LCH	lch(33.27, 56.75, 296.03°)
OKLab	oklab(43.45% 0.0077 -0.1466)
OKLCH	oklch(43.45% 0.147 273)
XYZ	xyz(10.1585, 7.6633, 34.1947)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3945A0 #A09439

analogous

#3978A0 #3945A0 #6139A0

triadic

#3945A0 #A03945 #45A039

tetradic

#3945A0 #A03978 #A09439 #39A061

square

#3945A0 #A03978 #A09439 #39A061

split-complementary

#3945A0 #A06139 #78A039

monochromatic

#191E46 #293273 #3945A0 #5461C2 #818BD2

Accessibility & contrast

On white

8.29

#3945A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3945A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3945A0

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3945A0	#FFFFFF	#000000	##FFFFFF
##3945A0	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A3

Deuteranopia (green-blind)

#004A9E

Tritanopia (blue-blind)

#005B6B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3945a0;
/* rgb */ color: rgb(57, 69, 160);
/* oklch */ color: oklch(43.4% 0.147 273.0);

Tailwind

colors: {
  custom: {
    50: '#7b78bd',
    500: '#3945a0',
    950: '#000000',
  },
}

SCSS

$custom: #3945a0;
$custom-light: #7b78bd;
$custom-dark: #000000;

JSON

{
  "hex": "#3945a0",
  "rgb": {
    "r": 57,
    "g": 69,
    "b": 160
  },
  "hsl": {
    "h": 233.01,
    "s": 47.465,
    "l": 42.549
  },
  "oklch": {
    "l": 0.43445,
    "c": 0.14675,
    "h": 273
  },
  "luminance": 0.07664
}

Semantic roles & 50–950 ramp

primary

#3945A0

secondary

#BCB479

accent

#C751D7

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0912

muted

#7C7B81

Preview Lab

Preview with #3945A0

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

Preview Lab → · Contrast checker → · Palette generator →