#403AB9#403AB9

#403AB9 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 44.1% C 0.192 H 277.1°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#403AB9
RGB	rgb(64, 58, 185)
HSL	hsl(243, 52%, 48%)
HSV	hsv(243, 69%, 73%)
CMYK	cmyk(65.4%, 68.6%, 0%, 27.5%)
CIE-LAB	lab(33.17, 41.51, -66.05)
CIE-LCH	lch(33.17, 78.01, 302.14°)
OKLab	oklab(44.14% 0.0239 -0.1906)
OKLCH	oklch(44.14% 0.192 277.1)
XYZ	xyz(12.3815, 7.6178, 46.7074)
Luminance	0.0762 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.83

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403AB9 #B3B93A

analogous

#3A73B9 #403AB9 #803AB9

triadic

#403AB9 #B9403A #3AB940

tetradic

#403AB9 #B93A73 #B3B93A #3AB980

square

#403AB9 #B93A73 #B3B93A #3AB980

split-complementary

#403AB9 #B9803A #73B93A

monochromatic

#201D5C #302B8A #403AB9 #6762CE #9491DC

Accessibility & contrast

On white

8.32

#403AB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#403AB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403AB9

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403AB9	#FFFFFF	#000000	##FFFFFF
##403AB9	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BD

Deuteranopia (green-blind)

#0049B7

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403ab9;
/* rgb */ color: rgb(64, 58, 185);
/* oklch */ color: oklch(44.1% 0.192 277.1);

Tailwind

colors: {
  custom: {
    50: '#8471cf',
    500: '#403ab9',
    950: '#000000',
  },
}

SCSS

$custom: #403ab9;
$custom-light: #8471cf;
$custom-dark: #000000;

JSON

{
  "hex": "#403ab9",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 185
  },
  "hsl": {
    "h": 242.835,
    "s": 52.263,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44141,
    "c": 0.19212,
    "h": 277.1
  },
  "luminance": 0.07619
}

Semantic roles & 50–950 ramp

primary

#403AB9

secondary

#C4C787

accent

#DC4CD5

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403AB9

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

Preview Lab → · Contrast checker → · Palette generator →