#403EA5#403EA5

#403EA5 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.161 H 278.1°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#403EA5
RGB	rgb(64, 62, 165)
HSL	hsl(241, 45%, 45%)
HSV	hsv(241, 62%, 65%)
CMYK	cmyk(61.2%, 62.4%, 0%, 35.3%)
CIE-LAB	lab(32.37, 32.37, -55.44)
CIE-LCH	lch(32.37, 64.20, 300.28°)
OKLab	oklab(43.03% 0.0226 -0.1595)
OKLCH	oklch(43.03% 0.161 278.1)
XYZ	xyz(10.6263, 7.2511, 36.4296)
Luminance	0.0725 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.66

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EA5 #A3A53E

analogous

#3E70A5 #403EA5 #743EA5

triadic

#403EA5 #A5403E #3EA540

tetradic

#403EA5 #A53E70 #A3A53E #3EA574

square

#403EA5 #A53E70 #A3A53E #3EA574

split-complementary

#403EA5 #A5743E #70A53E

monochromatic

#1D1D4C #2F2D79 #403EA5 #605EC2 #8C8AD3

Accessibility & contrast

On white

8.57

#403EA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#403EA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EA5

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EA5	#FFFFFF	#000000	##FFFFFF
##403EA5	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A8

Deuteranopia (green-blind)

#0048A3

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403ea5;
/* rgb */ color: rgb(64, 62, 165);
/* oklch */ color: oklch(43.0% 0.161 278.1);

Tailwind

colors: {
  custom: {
    50: '#8073c1',
    500: '#403ea5',
    950: '#000000',
  },
}

SCSS

$custom: #403ea5;
$custom-light: #8073c1;
$custom-dark: #000000;

JSON

{
  "hex": "#403ea5",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 165
  },
  "hsl": {
    "h": 241.165,
    "s": 45.374,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43026,
    "c": 0.1611,
    "h": 278.1
  },
  "luminance": 0.07252
}

Semantic roles & 50–950 ramp

primary

#403EA5

secondary

#BDBE81

accent

#D553D3

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403EA5

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

Preview Lab → · Contrast checker → · Palette generator →