#403FB5#403FB5

#403FB5 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.6% C 0.181 H 276.5°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#403FB5
RGB	rgb(64, 63, 181)
HSL	hsl(241, 48%, 48%)
HSV	hsv(241, 65%, 71%)
CMYK	cmyk(64.6%, 65.2%, 0%, 29%)
CIE-LAB	lab(33.94, 37.16, -62.43)
CIE-LCH	lch(33.94, 72.65, 300.76°)
OKLab	oklab(44.59% 0.0206 -0.18)
OKLCH	oklch(44.59% 0.181 276.5)
XYZ	xyz(12.2296, 7.9802, 44.6030)
Luminance	0.0798 (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

#403FB5 #B4B53F

analogous

#3F79B5 #403FB5 #7B3FB5

triadic

#403FB5 #B5403F #3FB540

tetradic

#403FB5 #B53F79 #B4B53F #3FB57B

square

#403FB5 #B53F79 #B4B53F #3FB57B

split-complementary

#403FB5 #B57B3F #79B53F

monochromatic

#201F5A #302F88 #403FB5 #6867CA #9594DA

Accessibility & contrast

On white

8.09

#403FB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#403FB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FB5

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FB5	#FFFFFF	#000000	##FFFFFF
##403FB5	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B9

Deuteranopia (green-blind)

#004BB3

Tritanopia (blue-blind)

#005D74

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403fb5;
/* rgb */ color: rgb(64, 63, 181);
/* oklch */ color: oklch(44.6% 0.181 276.5);

Tailwind

colors: {
  custom: {
    50: '#8374cc',
    500: '#403fb5',
    950: '#000000',
  },
}

SCSS

$custom: #403fb5;
$custom-light: #8374cc;
$custom-dark: #000000;

JSON

{
  "hex": "#403fb5",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 181
  },
  "hsl": {
    "h": 240.508,
    "s": 48.361,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44588,
    "c": 0.18118,
    "h": 276.5
  },
  "luminance": 0.07981
}

Semantic roles & 50–950 ramp

primary

#403FB5

secondary

#C5C58A

accent

#D850D7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403FB5

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

Preview Lab → · Contrast checker → · Palette generator →