#40389E#40389E

#40389E is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.4% C 0.159 H 280.4°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#40389E
RGB	rgb(64, 56, 158)
HSL	hsl(245, 48%, 42%)
HSV	hsv(245, 65%, 62%)
CMYK	cmyk(59.5%, 64.6%, 0%, 38%)
CIE-LAB	lab(30.37, 33.79, -54.49)
CIE-LCH	lch(30.37, 64.11, 301.80°)
OKLab	oklab(41.38% 0.0287 -0.1567)
OKLCH	oklch(41.38% 0.159 280.4)
XYZ	xyz(9.6981, 6.3863, 33.0628)
Luminance	0.0639 (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

#40389E #969E38

analogous

#38639E #40389E #73389E

triadic

#40389E #9E4038 #389E40

tetradic

#40389E #9E3863 #969E38 #389E73

square

#40389E #9E3863 #969E38 #389E73

split-complementary

#40389E #9E7338 #639E38

monochromatic

#1B1844 #2E2871 #40389E #5A52C2 #857FD2

Accessibility & contrast

On white

9.22

#40389E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#40389E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40389E

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40389E	#FFFFFF	#000000	##FFFFFF
##40389E	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA1

Deuteranopia (green-blind)

#00449C

Tritanopia (blue-blind)

#015165

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #40389e;
/* rgb */ color: rgb(64, 56, 158);
/* oklch */ color: oklch(41.4% 0.159 280.4);

Tailwind

colors: {
  custom: {
    50: '#7f6fbb',
    500: '#40389e',
    950: '#000000',
  },
}

SCSS

$custom: #40389e;
$custom-light: #7f6fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#40389e",
  "rgb": {
    "r": 64,
    "g": 56,
    "b": 158
  },
  "hsl": {
    "h": 244.706,
    "s": 47.664,
    "l": 41.961
  },
  "oklch": {
    "l": 0.4138,
    "c": 0.15932,
    "h": 280.4
  },
  "luminance": 0.06387
}

Semantic roles & 50–950 ramp

primary

#40389E

secondary

#B6BB77

accent

#D751CD

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #40389E

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

Preview Lab → · Contrast checker → · Palette generator →