#403B99#403B99

#403B99 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.149 H 280.1°. Best body text is #FFFFFF at 9.12:1 contrast (WCAG AA passes).

Color values

HEX	#403B99
RGB	rgb(64, 59, 153)
HSL	hsl(243, 44%, 42%)
HSV	hsv(243, 61%, 60%)
CMYK	cmyk(58.2%, 61.4%, 0%, 40%)
CIE-LAB	lab(30.68, 30.23, -50.93)
CIE-LCH	lch(30.68, 59.23, 300.69°)
OKLab	oklab(41.48% 0.0261 -0.1463)
OKLCH	oklch(41.48% 0.149 280.1)
XYZ	xyz(9.4263, 6.5172, 30.8920)
Luminance	0.0652 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403B99 #94993B

analogous

#3B6599 #403B99 #6F3B99

triadic

#403B99 #99403B #3B9940

tetradic

#403B99 #993B65 #94993B #3B996F

square

#403B99 #993B65 #94993B #3B996F

split-complementary

#403B99 #996F3B #65993B

monochromatic

#1B1941 #2E2A6D #403B99 #5A54BD #8480CE

Accessibility & contrast

On white

9.12

#403B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#403B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403B99

9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403B99	#FFFFFF	#000000	##FFFFFF
##403B99	1.00	9.12	2.30	9.12
#FFFFFF	9.12	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9C

Deuteranopia (green-blind)

#004597

Tritanopia (blue-blind)

#0D5264

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #403b99;
/* rgb */ color: rgb(64, 59, 153);
/* oklch */ color: oklch(41.5% 0.149 280.1);

Tailwind

colors: {
  custom: {
    50: '#7e71b8',
    500: '#403b99',
    950: '#000000',
  },
}

SCSS

$custom: #403b99;
$custom-light: #7e71b8;
$custom-dark: #000000;

JSON

{
  "hex": "#403b99",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 153
  },
  "hsl": {
    "h": 243.191,
    "s": 44.34,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41484,
    "c": 0.14858,
    "h": 280.1
  },
  "luminance": 0.06518
}

Semantic roles & 50–950 ramp

primary

#403B99

secondary

#B4B878

accent

#D454CD

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0711

muted

#7C7A80

Preview Lab

Preview with #403B99

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

Preview Lab → · Contrast checker → · Palette generator →