#403D9A#403D9A

#403D9A is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.9% C 0.147 H 279.4°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#403D9A
RGB	rgb(64, 61, 154)
HSL	hsl(242, 43%, 42%)
HSV	hsv(242, 60%, 60%)
CMYK	cmyk(58.4%, 60.4%, 0%, 39.6%)
CIE-LAB	lab(31.25, 29.28, -50.61)
CIE-LCH	lch(31.25, 58.47, 300.05°)
OKLab	oklab(41.93% 0.024 -0.1453)
OKLCH	oklch(41.93% 0.147 279.4)
XYZ	xyz(9.6140, 6.7599, 31.3638)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.13

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D9A #979A3D

analogous

#3D699A #403D9A #6E3D9A

triadic

#403D9A #9A403D #3D9A40

tetradic

#403D9A #9A3D69 #979A3D #3D9A6E

square

#403D9A #9A3D69 #979A3D #3D9A6E

split-complementary

#403D9A #9A6E3D #699A3D

monochromatic

#1C1A42 #2E2C6E #403D9A #5B58BD #8683CE

Accessibility & contrast

On white

8.93

#403D9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#403D9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D9A

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D9A	#FFFFFF	#000000	##FFFFFF
##403D9A	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9D

Deuteranopia (green-blind)

#004698

Tritanopia (blue-blind)

#0A5365

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #403d9a;
/* rgb */ color: rgb(64, 61, 154);
/* oklch */ color: oklch(41.9% 0.147 279.4);

Tailwind

colors: {
  custom: {
    50: '#7e72b8',
    500: '#403d9a',
    950: '#000000',
  },
}

SCSS

$custom: #403d9a;
$custom-light: #7e72b8;
$custom-dark: #000000;

JSON

{
  "hex": "#403d9a",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 154
  },
  "hsl": {
    "h": 241.935,
    "s": 43.256,
    "l": 42.157
  },
  "oklch": {
    "l": 0.4193,
    "c": 0.14728,
    "h": 279.4
  },
  "luminance": 0.06761
}

Semantic roles & 50–950 ramp

primary

#403D9A

secondary

#B6B87B

accent

#D355CF

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0811

muted

#7C7B80

Preview Lab

Preview with #403D9A

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

Preview Lab → · Contrast checker → · Palette generator →