#403D9D#403D9D

#403D9D is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.151 H 279.1°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#403D9D
RGB	rgb(64, 61, 157)
HSL	hsl(242, 44%, 43%)
HSV	hsv(242, 61%, 62%)
CMYK	cmyk(59.2%, 61.1%, 0%, 38.4%)
CIE-LAB	lab(31.49, 30.30, -52.05)
CIE-LCH	lch(31.49, 60.23, 300.20°)
OKLab	oklab(42.18% 0.0239 -0.1495)
OKLCH	oklch(42.18% 0.151 279.1)
XYZ	xyz(9.8670, 6.8611, 32.6961)
Luminance	0.0686 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.70

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D9D #9A9D3D

analogous

#3D6A9D #403D9D #703D9D

triadic

#403D9D #9D403D #3D9D40

tetradic

#403D9D #9D3D6A #9A9D3D #3D9D70

square

#403D9D #9D3D6A #9A9D3D #3D9D70

split-complementary

#403D9D #9D703D #6A9D3D

monochromatic

#1C1B45 #2E2C71 #403D9D #5C59BE #8785D0

Accessibility & contrast

On white

8.85

#403D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#403D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D9D

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D9D	#FFFFFF	#000000	##FFFFFF
##403D9D	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA0

Deuteranopia (green-blind)

#00469B

Tritanopia (blue-blind)

#025467

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #403d9d;
/* rgb */ color: rgb(64, 61, 157);
/* oklch */ color: oklch(42.2% 0.151 279.1);

Tailwind

colors: {
  custom: {
    50: '#7e73bb',
    500: '#403d9d',
    950: '#000000',
  },
}

SCSS

$custom: #403d9d;
$custom-light: #7e73bb;
$custom-dark: #000000;

JSON

{
  "hex": "#403d9d",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 157
  },
  "hsl": {
    "h": 241.875,
    "s": 44.037,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42177,
    "c": 0.15144,
    "h": 279.1
  },
  "luminance": 0.06862
}

Semantic roles & 50–950 ramp

primary

#403D9D

secondary

#B8BA7C

accent

#D454D0

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403D9D

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

Preview Lab → · Contrast checker → · Palette generator →