#403D99#403D99

#403D99 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.146 H 279.5°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#403D99
RGB	rgb(64, 61, 153)
HSL	hsl(242, 43%, 42%)
HSV	hsv(242, 60%, 60%)
CMYK	cmyk(58.2%, 60.1%, 0%, 40%)
CIE-LAB	lab(31.18, 28.95, -50.13)
CIE-LCH	lch(31.18, 57.89, 300.00°)
OKLab	oklab(41.85% 0.024 -0.1439)
OKLCH	oklch(41.85% 0.146 279.5)
XYZ	xyz(9.5311, 6.7267, 30.9270)
Luminance	0.0673 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.28

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D99 #96993D

analogous

#3D6899 #403D99 #6E3D99

triadic

#403D99 #99403D #3D9940

tetradic

#403D99 #993D68 #96993D #3D996E

square

#403D99 #993D68 #96993D #3D996E

split-complementary

#403D99 #996E3D #68993D

monochromatic

#1B1A41 #2E2C6D #403D99 #5A57BC #8583CE

Accessibility & contrast

On white

8.95

#403D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#403D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D99

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D99	#FFFFFF	#000000	##FFFFFF
##403D99	1.00	8.95	2.35	8.95
#FFFFFF	8.95	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9C

Deuteranopia (green-blind)

#004697

Tritanopia (blue-blind)

#0C5365

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #403d99;
/* rgb */ color: rgb(64, 61, 153);
/* oklch */ color: oklch(41.8% 0.146 279.5);

Tailwind

colors: {
  custom: {
    50: '#7e72b8',
    500: '#403d99',
    950: '#000000',
  },
}

SCSS

$custom: #403d99;
$custom-light: #7e72b8;
$custom-dark: #000000;

JSON

{
  "hex": "#403d99",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 153
  },
  "hsl": {
    "h": 241.957,
    "s": 42.991,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41849,
    "c": 0.14588,
    "h": 279.5
  },
  "luminance": 0.06727
}

Semantic roles & 50–950 ramp

primary

#403D99

secondary

#B6B87A

accent

#D355CF

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0811

muted

#7C7B80

Preview Lab

Preview with #403D99

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

Preview Lab → · Contrast checker → · Palette generator →