#403EA4#403EA4

#403EA4 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.160 H 278.1°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#403EA4
RGB	rgb(64, 62, 164)
HSL	hsl(241, 45%, 44%)
HSV	hsv(241, 62%, 64%)
CMYK	cmyk(61%, 62.2%, 0%, 35.7%)
CIE-LAB	lab(32.29, 32.03, -54.97)
CIE-LCH	lch(32.29, 63.63, 300.23°)
OKLab	oklab(42.94% 0.0226 -0.1581)
OKLCH	oklch(42.94% 0.16 278.1)
XYZ	xyz(10.5357, 7.2148, 35.9522)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.80

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EA4 #A2A43E

analogous

#3E6FA4 #403EA4 #733EA4

triadic

#403EA4 #A4403E #3EA440

tetradic

#403EA4 #A43E6F #A2A43E #3EA473

square

#403EA4 #A43E6F #A2A43E #3EA473

split-complementary

#403EA4 #A4733E #6FA43E

monochromatic

#1D1C4B #2F2D78 #403EA4 #5F5DC2 #8B8AD3

Accessibility & contrast

On white

8.60

#403EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#403EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EA4

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EA4	#FFFFFF	#000000	##FFFFFF
##403EA4	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A7

Deuteranopia (green-blind)

#0048A2

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403ea4;
/* rgb */ color: rgb(64, 62, 164);
/* oklch */ color: oklch(42.9% 0.160 278.1);

Tailwind

colors: {
  custom: {
    50: '#7f73c0',
    500: '#403ea4',
    950: '#000000',
  },
}

SCSS

$custom: #403ea4;
$custom-light: #7f73c0;
$custom-dark: #000000;

JSON

{
  "hex": "#403ea4",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 164
  },
  "hsl": {
    "h": 241.176,
    "s": 45.133,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42942,
    "c": 0.15974,
    "h": 278.1
  },
  "luminance": 0.07216
}

Semantic roles & 50–950 ramp

primary

#403EA4

secondary

#BCBD81

accent

#D553D2

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403EA4

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

Preview Lab → · Contrast checker → · Palette generator →