#403D9E#403D9E

#403D9E is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.153 H 279.0°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#403D9E
RGB	rgb(64, 61, 158)
HSL	hsl(242, 44%, 43%)
HSV	hsv(242, 61%, 62%)
CMYK	cmyk(59.5%, 61.4%, 0%, 38%)
CIE-LAB	lab(31.57, 30.64, -52.53)
CIE-LCH	lch(31.57, 60.81, 300.25°)
OKLab	oklab(42.26% 0.0239 -0.1509)
OKLCH	oklch(42.26% 0.153 279)
XYZ	xyz(9.9527, 6.8954, 33.1476)
Luminance	0.0690 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.55

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D9E #9B9E3D

analogous

#3D6A9E #403D9E #713D9E

triadic

#403D9E #9E403D #3D9E40

tetradic

#403D9E #9E3D6A #9B9E3D #3D9E71

square

#403D9E #9E3D6A #9B9E3D #3D9E71

split-complementary

#403D9E #9E713D #6A9E3D

monochromatic

#1C1B46 #2E2C72 #403D9E #5C59BF #8885D0

Accessibility & contrast

On white

8.83

#403D9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#403D9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D9E

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D9E	#FFFFFF	#000000	##FFFFFF
##403D9E	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA1

Deuteranopia (green-blind)

#00469C

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #403d9e;
/* rgb */ color: rgb(64, 61, 158);
/* oklch */ color: oklch(42.3% 0.153 279.0);

Tailwind

colors: {
  custom: {
    50: '#7e73bb',
    500: '#403d9e',
    950: '#000000',
  },
}

SCSS

$custom: #403d9e;
$custom-light: #7e73bb;
$custom-dark: #000000;

JSON

{
  "hex": "#403d9e",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 158
  },
  "hsl": {
    "h": 241.856,
    "s": 44.292,
    "l": 42.941
  },
  "oklch": {
    "l": 0.4226,
    "c": 0.15283,
    "h": 279
  },
  "luminance": 0.06896
}

Semantic roles & 50–950 ramp

primary

#403D9E

secondary

#B8BA7D

accent

#D454D0

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403D9E

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

Preview Lab → · Contrast checker → · Palette generator →