#403C9A#403C9A

#403C9A is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.7% C 0.149 H 279.7°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#403C9A
RGB	rgb(64, 60, 154)
HSL	hsl(243, 44%, 42%)
HSV	hsv(243, 61%, 60%)
CMYK	cmyk(58.4%, 61%, 0%, 39.6%)
CIE-LAB	lab(31.01, 29.93, -51.01)
CIE-LCH	lch(31.01, 59.14, 300.40°)
OKLab	oklab(41.75% 0.025 -0.1465)
OKLCH	oklch(41.75% 0.149 279.7)
XYZ	xyz(9.5611, 6.6541, 31.3461)
Luminance	0.0665 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.07

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403C9A #969A3C

analogous

#3C679A #403C9A #6F3C9A

triadic

#403C9A #9A403C #3C9A40

tetradic

#403C9A #9A3C67 #969A3C #3C9A6F

square

#403C9A #9A3C67 #969A3C #3C9A6F

split-complementary

#403C9A #9A6F3C #679A3C

monochromatic

#1B1A42 #2E2B6E #403C9A #5A56BD #8582CE

Accessibility & contrast

On white

9.01

#403C9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#403C9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403C9A

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403C9A	#FFFFFF	#000000	##FFFFFF
##403C9A	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9D

Deuteranopia (green-blind)

#004598

Tritanopia (blue-blind)

#0A5365

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #403c9a;
/* rgb */ color: rgb(64, 60, 154);
/* oklch */ color: oklch(41.7% 0.149 279.7);

Tailwind

colors: {
  custom: {
    50: '#7e72b8',
    500: '#403c9a',
    950: '#000000',
  },
}

SCSS

$custom: #403c9a;
$custom-light: #7e72b8;
$custom-dark: #000000;

JSON

{
  "hex": "#403c9a",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 154
  },
  "hsl": {
    "h": 242.553,
    "s": 43.925,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41748,
    "c": 0.14862,
    "h": 279.7
  },
  "luminance": 0.06655
}

Semantic roles & 50–950 ramp

primary

#403C9A

secondary

#B6B87A

accent

#D454CE

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0811

muted

#7C7B80

Preview Lab

Preview with #403C9A

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

Preview Lab → · Contrast checker → · Palette generator →