#403FB7#403FB7

#403FB7 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.8% C 0.184 H 276.4°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#403FB7
RGB	rgb(64, 63, 183)
HSL	hsl(241, 49%, 48%)
HSV	hsv(241, 66%, 72%)
CMYK	cmyk(65%, 65.6%, 0%, 28.2%)
CIE-LAB	lab(34.11, 37.83, -63.33)
CIE-LCH	lch(34.11, 73.77, 300.85°)
OKLab	oklab(44.77% 0.0204 -0.1826)
OKLCH	oklch(44.77% 0.184 276.4)
XYZ	xyz(12.4363, 8.0629, 45.6915)
Luminance	0.0806 (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

#403FB7 #B6B73F

analogous

#3F7AB7 #403FB7 #7C3FB7

triadic

#403FB7 #B7403F #3FB740

tetradic

#403FB7 #B73F7A #B6B73F #3FB77C

square

#403FB7 #B73F7A #B6B73F #3FB77C

split-complementary

#403FB7 #B77C3F #7AB73F

monochromatic

#20205C #302F89 #403FB7 #6968CB #9696DB

Accessibility & contrast

On white

8.04

#403FB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#403FB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FB7

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FB7	#FFFFFF	#000000	##FFFFFF
##403FB7	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BB

Deuteranopia (green-blind)

#004BB5

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403fb7;
/* rgb */ color: rgb(64, 63, 183);
/* oklch */ color: oklch(44.8% 0.184 276.4);

Tailwind

colors: {
  custom: {
    50: '#8374ce',
    500: '#403fb7',
    950: '#000000',
  },
}

SCSS

$custom: #403fb7;
$custom-light: #8374ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403fb7",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 183
  },
  "hsl": {
    "h": 240.5,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44766,
    "c": 0.18378,
    "h": 276.4
  },
  "luminance": 0.08064
}

Semantic roles & 50–950 ramp

primary

#403FB7

secondary

#C6C68B

accent

#D84FD7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403FB7

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

Preview Lab → · Contrast checker → · Palette generator →