#403CA8#403CA8

#403CA8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.168 H 278.3°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#403CA8
RGB	rgb(64, 60, 168)
HSL	hsl(242, 47%, 45%)
HSV	hsv(242, 64%, 66%)
CMYK	cmyk(61.9%, 64.3%, 0%, 34.1%)
CIE-LAB	lab(32.14, 34.64, -57.62)
CIE-LCH	lch(32.14, 67.23, 301.01°)
OKLab	oklab(42.94% 0.0242 -0.1659)
OKLCH	oklch(42.94% 0.168 278.3)
XYZ	xyz(10.7958, 7.1480, 37.8490)
Luminance	0.0715 (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

#403CA8 #A4A83C

analogous

#3C6EA8 #403CA8 #763CA8

triadic

#403CA8 #A8403C #3CA840

tetradic

#403CA8 #A83C6E #A4A83C #3CA876

square

#403CA8 #A83C6E #A4A83C #3CA876

split-complementary

#403CA8 #A8763C #6EA83C

monochromatic

#1E1C4E #2F2C7B #403CA8 #605CC5 #8C89D5

Accessibility & contrast

On white

8.64

#403CA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#403CA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CA8

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CA8	#FFFFFF	#000000	##FFFFFF
##403CA8	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AB

Deuteranopia (green-blind)

#0047A6

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403ca8;
/* rgb */ color: rgb(64, 60, 168);
/* oklch */ color: oklch(42.9% 0.168 278.3);

Tailwind

colors: {
  custom: {
    50: '#8072c3',
    500: '#403ca8',
    950: '#000000',
  },
}

SCSS

$custom: #403ca8;
$custom-light: #8072c3;
$custom-dark: #000000;

JSON

{
  "hex": "#403ca8",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 168
  },
  "hsl": {
    "h": 242.222,
    "s": 47.368,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42935,
    "c": 0.16766,
    "h": 278.3
  },
  "luminance": 0.07149
}

Semantic roles & 50–950 ramp

primary

#403CA8

secondary

#BDBF80

accent

#D751D2

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403CA8

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

Preview Lab → · Contrast checker → · Palette generator →