#403D9F#403D9F

#403D9F is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.154 H 278.9°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#403D9F
RGB	rgb(64, 61, 159)
HSL	hsl(242, 45%, 43%)
HSV	hsv(242, 62%, 62%)
CMYK	cmyk(59.7%, 61.6%, 0%, 37.6%)
CIE-LAB	lab(31.65, 30.97, -53.01)
CIE-LCH	lch(31.65, 61.39, 300.30°)
OKLab	oklab(42.34% 0.0238 -0.1524)
OKLCH	oklch(42.34% 0.154 278.9)
XYZ	xyz(10.0391, 6.9300, 33.6028)
Luminance	0.0693 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.41

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D9F #9C9F3D

analogous

#3D6B9F #403D9F #713D9F

triadic

#403D9F #9F403D #3D9F40

tetradic

#403D9F #9F3D6B #9C9F3D #3D9F71

square

#403D9F #9F3D6B #9C9F3D #3D9F71

split-complementary

#403D9F #9F713D #6B9F3D

monochromatic

#1C1B47 #2E2C73 #403D9F #5D5AC0 #8886D1

Accessibility & contrast

On white

8.80

#403D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#403D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D9F

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D9F	#FFFFFF	#000000	##FFFFFF
##403D9F	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA2

Deuteranopia (green-blind)

#00479D

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #403d9f;
/* rgb */ color: rgb(64, 61, 159);
/* oklch */ color: oklch(42.3% 0.154 278.9);

Tailwind

colors: {
  custom: {
    50: '#7f73bc',
    500: '#403d9f',
    950: '#000000',
  },
}

SCSS

$custom: #403d9f;
$custom-light: #7f73bc;
$custom-dark: #000000;

JSON

{
  "hex": "#403d9f",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 159
  },
  "hsl": {
    "h": 241.837,
    "s": 44.545,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42343,
    "c": 0.1542,
    "h": 278.9
  },
  "luminance": 0.06931
}

Semantic roles & 50–950 ramp

primary

#403D9F

secondary

#B9BB7D

accent

#D454D0

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403D9F

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

Preview Lab → · Contrast checker → · Palette generator →