#40348B#40348B

#40348B is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.1% C 0.139 H 284.2°. Best body text is #FFFFFF at 10.09:1 contrast (WCAG AA passes).

Color values

HEX	#40348B
RGB	rgb(64, 52, 139)
HSL	hsl(248, 46%, 37%)
HSV	hsv(248, 63%, 55%)
CMYK	cmyk(54%, 62.6%, 0%, 45.5%)
CIE-LAB	lab(27.87, 30.03, -46.90)
CIE-LCH	lch(27.87, 55.69, 302.63°)
OKLab	oklab(39.07% 0.0341 -0.1344)
OKLCH	oklch(39.07% 0.139 284.2)
XYZ	xyz(8.0011, 5.4096, 25.0436)
Luminance	0.0541 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40348B #7F8B34

analogous

#34538B #40348B #6C348B

triadic

#40348B #8B4034 #348B40

tetradic

#40348B #8B3453 #7F8B34 #348B6C

square

#40348B #8B3453 #7F8B34 #348B6C

split-complementary

#40348B #8B6C34 #538B34

monochromatic

#171332 #2B235E #40348B #5545B8 #7C70C9

Accessibility & contrast

On white

10.09

#40348B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#40348B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40348B

10.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40348B	#FFFFFF	#000000	##FFFFFF
##40348B	1.00	10.09	2.08	10.09
#FFFFFF	10.09	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003F89

Tritanopia (blue-blind)

#21495A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #40348b;
/* rgb */ color: rgb(64, 52, 139);
/* oklch */ color: oklch(39.1% 0.139 284.2);

Tailwind

colors: {
  custom: {
    50: '#7c6cae',
    500: '#40348b',
    950: '#000000',
  },
}

SCSS

$custom: #40348b;
$custom-light: #7c6cae;
$custom-dark: #000000;

JSON

{
  "hex": "#40348b",
  "rgb": {
    "r": 64,
    "g": 52,
    "b": 139
  },
  "hsl": {
    "h": 248.276,
    "s": 45.55,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39073,
    "c": 0.1387,
    "h": 284.2
  },
  "luminance": 0.0541
}

Semantic roles & 50–950 ramp

primary

#40348B

secondary

#A8B269

accent

#D553C3

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #40348B

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

Preview Lab → · Contrast checker → · Palette generator →