#403B9A#403B9A

#403B9A is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.6% C 0.150 H 280.0°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#403B9A
RGB	rgb(64, 59, 154)
HSL	hsl(243, 45%, 42%)
HSV	hsv(243, 62%, 60%)
CMYK	cmyk(58.4%, 61.7%, 0%, 39.6%)
CIE-LAB	lab(30.76, 30.56, -51.41)
CIE-LCH	lch(30.76, 59.81, 300.73°)
OKLab	oklab(41.57% 0.026 -0.1477)
OKLCH	oklch(41.57% 0.15 280)
XYZ	xyz(9.5092, 6.5504, 31.3288)
Luminance	0.0655 (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

#403B9A #959A3B

analogous

#3B669A #403B9A #703B9A

triadic

#403B9A #9A403B #3B9A40

tetradic

#403B9A #9A3B66 #959A3B #3B9A70

square

#403B9A #9A3B66 #959A3B #3B9A70

split-complementary

#403B9A #9A703B #669A3B

monochromatic

#1B1942 #2E2A6E #403B9A #5A55BE #8581CF

Accessibility & contrast

On white

9.09

#403B9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#403B9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403B9A

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403B9A	#FFFFFF	#000000	##FFFFFF
##403B9A	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9D

Deuteranopia (green-blind)

#004598

Tritanopia (blue-blind)

#0B5264

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #403b9a;
/* rgb */ color: rgb(64, 59, 154);
/* oklch */ color: oklch(41.6% 0.150 280.0);

Tailwind

colors: {
  custom: {
    50: '#7e71b8',
    500: '#403b9a',
    950: '#000000',
  },
}

SCSS

$custom: #403b9a;
$custom-light: #7e71b8;
$custom-dark: #000000;

JSON

{
  "hex": "#403b9a",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 154
  },
  "hsl": {
    "h": 243.158,
    "s": 44.601,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41567,
    "c": 0.14995,
    "h": 280
  },
  "luminance": 0.06551
}

Semantic roles & 50–950 ramp

primary

#403B9A

secondary

#B5B878

accent

#D453CE

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0711

muted

#7C7A80

Preview Lab

Preview with #403B9A

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

Preview Lab → · Contrast checker → · Palette generator →