#403CB8#403CB8

#403CB8 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.4% C 0.189 H 276.9°. Best body text is #FFFFFF at 8.21:1 contrast (WCAG AA passes).

Color values

HEX	#403CB8
RGB	rgb(64, 60, 184)
HSL	hsl(242, 51%, 48%)
HSV	hsv(242, 67%, 72%)
CMYK	cmyk(65.2%, 67.4%, 0%, 27.8%)
CIE-LAB	lab(33.52, 39.98, -64.89)
CIE-LCH	lch(33.52, 76.22, 301.64°)
OKLab	oklab(44.37% 0.0225 -0.1872)
OKLCH	oklch(44.37% 0.189 276.9)
XYZ	xyz(12.3791, 7.7814, 46.1877)
Luminance	0.0778 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.51

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403CB8 #B4B83C

analogous

#3C76B8 #403CB8 #7E3CB8

triadic

#403CB8 #B8403C #3CB840

tetradic

#403CB8 #B83C76 #B4B83C #3CB87E

square

#403CB8 #B83C76 #B4B83C #3CB87E

split-complementary

#403CB8 #B87E3C #76B83C

monochromatic

#201E5C #302D8A #403CB8 #6865CD #9593DC

Accessibility & contrast

On white

8.21

#403CB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#403CB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CB8

8.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CB8	#FFFFFF	#000000	##FFFFFF
##403CB8	1.00	8.21	2.56	8.21
#FFFFFF	8.21	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0049B6

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #403cb8;
/* rgb */ color: rgb(64, 60, 184);
/* oklch */ color: oklch(44.4% 0.189 276.9);

Tailwind

colors: {
  custom: {
    50: '#8372ce',
    500: '#403cb8',
    950: '#000000',
  },
}

SCSS

$custom: #403cb8;
$custom-light: #8372ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403cb8",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 184
  },
  "hsl": {
    "h": 241.935,
    "s": 50.82,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44365,
    "c": 0.18857,
    "h": 276.9
  },
  "luminance": 0.07782
}

Semantic roles & 50–950 ramp

primary

#403CB8

secondary

#C5C789

accent

#DA4DD6

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403CB8

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

Preview Lab → · Contrast checker → · Palette generator →