#403EA6#403EA6

#403EA6 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.162 H 278.0°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#403EA6
RGB	rgb(64, 62, 166)
HSL	hsl(241, 46%, 45%)
HSV	hsv(241, 63%, 65%)
CMYK	cmyk(61.4%, 62.7%, 0%, 34.9%)
CIE-LAB	lab(32.45, 32.71, -55.91)
CIE-LCH	lch(32.45, 64.78, 300.33°)
OKLab	oklab(43.11% 0.0225 -0.1609)
OKLCH	oklch(43.11% 0.162 278)
XYZ	xyz(10.7177, 7.2876, 36.9109)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.53

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EA6 #A4A63E

analogous

#3E70A6 #403EA6 #743EA6

triadic

#403EA6 #A6403E #3EA640

tetradic

#403EA6 #A63E70 #A4A63E #3EA674

square

#403EA6 #A63E70 #A4A63E #3EA674

split-complementary

#403EA6 #A6743E #70A63E

monochromatic

#1E1D4D #2F2D79 #403EA6 #605EC3 #8C8BD4

Accessibility & contrast

On white

8.54

#403EA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#403EA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EA6

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EA6	#FFFFFF	#000000	##FFFFFF
##403EA6	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A9

Deuteranopia (green-blind)

#0048A4

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403ea6;
/* rgb */ color: rgb(64, 62, 166);
/* oklch */ color: oklch(43.1% 0.162 278.0);

Tailwind

colors: {
  custom: {
    50: '#8073c1',
    500: '#403ea6',
    950: '#000000',
  },
}

SCSS

$custom: #403ea6;
$custom-light: #8073c1;
$custom-dark: #000000;

JSON

{
  "hex": "#403ea6",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 166
  },
  "hsl": {
    "h": 241.154,
    "s": 45.614,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43111,
    "c": 0.16246,
    "h": 278
  },
  "luminance": 0.07288
}

Semantic roles & 50–950 ramp

primary

#403EA6

secondary

#BDBE82

accent

#D553D3

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403EA6

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

Preview Lab → · Contrast checker → · Palette generator →