#403DA7#403DA7

#403DA7 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.165 H 278.1°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#403DA7
RGB	rgb(64, 61, 167)
HSL	hsl(242, 46%, 45%)
HSV	hsv(242, 63%, 65%)
CMYK	cmyk(61.7%, 63.5%, 0%, 34.5%)
CIE-LAB	lab(32.30, 33.68, -56.77)
CIE-LCH	lch(32.30, 66.01, 300.68°)
OKLab	oklab(43.02% 0.0234 -0.1634)
OKLCH	oklch(43.02% 0.165 278.1)
XYZ	xyz(10.7559, 7.2167, 37.3779)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.34

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DA7 #A4A73D

analogous

#3D6FA7 #403DA7 #753DA7

triadic

#403DA7 #A7403D #3DA740

tetradic

#403DA7 #A73D6F #A4A73D #3DA775

square

#403DA7 #A73D6F #A4A73D #3DA775

split-complementary

#403DA7 #A7753D #6FA73D

monochromatic

#1E1C4D #2F2D7A #403DA7 #605DC4 #8C8AD4

Accessibility & contrast

On white

8.59

#403DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#403DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DA7

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DA7	#FFFFFF	#000000	##FFFFFF
##403DA7	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0048A5

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403da7;
/* rgb */ color: rgb(64, 61, 167);
/* oklch */ color: oklch(43.0% 0.165 278.1);

Tailwind

colors: {
  custom: {
    50: '#8073c2',
    500: '#403da7',
    950: '#000000',
  },
}

SCSS

$custom: #403da7;
$custom-light: #8073c2;
$custom-dark: #000000;

JSON

{
  "hex": "#403da7",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 167
  },
  "hsl": {
    "h": 241.698,
    "s": 46.491,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43021,
    "c": 0.16507,
    "h": 278.1
  },
  "luminance": 0.07217
}

Semantic roles & 50–950 ramp

primary

#403DA7

secondary

#BDBF81

accent

#D652D2

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403DA7

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

Preview Lab → · Contrast checker → · Palette generator →