#403EB9#403EB9

#403EB9 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.8% C 0.188 H 276.4°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#403EB9
RGB	rgb(64, 62, 185)
HSL	hsl(241, 50%, 48%)
HSV	hsv(241, 66%, 73%)
CMYK	cmyk(65.4%, 66.5%, 0%, 27.5%)
CIE-LAB	lab(34.06, 39.11, -64.60)
CIE-LCH	lch(34.06, 75.52, 301.19°)
OKLab	oklab(44.78% 0.0209 -0.1864)
OKLCH	oklch(44.78% 0.188 276.4)
XYZ	xyz(12.5911, 8.0370, 46.7773)
Luminance	0.0804 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.31

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EB9 #B7B93E

analogous

#3E79B9 #403EB9 #7D3EB9

triadic

#403EB9 #B9403E #3EB940

tetradic

#403EB9 #B93E79 #B7B93E #3EB97D

square

#403EB9 #B93E79 #B7B93E #3EB97D

split-complementary

#403EB9 #B97D3E #79B93E

monochromatic

#201F5D #302F8B #403EB9 #6968CC #9796DC

Accessibility & contrast

On white

8.05

#403EB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#403EB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EB9

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EB9	#FFFFFF	#000000	##FFFFFF
##403EB9	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BD

Deuteranopia (green-blind)

#004BB7

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403eb9;
/* rgb */ color: rgb(64, 62, 185);
/* oklch */ color: oklch(44.8% 0.188 276.4);

Tailwind

colors: {
  custom: {
    50: '#8474cf',
    500: '#403eb9',
    950: '#000000',
  },
}

SCSS

$custom: #403eb9;
$custom-light: #8474cf;
$custom-dark: #000000;

JSON

{
  "hex": "#403eb9",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 185
  },
  "hsl": {
    "h": 240.976,
    "s": 49.798,
    "l": 48.431
  },
  "oklch": {
    "l": 0.44781,
    "c": 0.18755,
    "h": 276.4
  },
  "luminance": 0.08038
}

Semantic roles & 50–950 ramp

primary

#403EB9

secondary

#C6C78C

accent

#D94ED7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403EB9

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

Preview Lab → · Contrast checker → · Palette generator →