#403CA5#403CA5

#403CA5 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.164 H 278.6°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#403CA5
RGB	rgb(64, 60, 165)
HSL	hsl(242, 47%, 44%)
HSV	hsv(242, 64%, 65%)
CMYK	cmyk(61.2%, 63.6%, 0%, 35.3%)
CIE-LAB	lab(31.89, 33.63, -56.23)
CIE-LCH	lch(31.89, 65.52, 300.88°)
OKLab	oklab(42.68% 0.0244 -0.1618)
OKLCH	oklch(42.68% 0.164 278.6)
XYZ	xyz(10.5196, 7.0375, 36.3941)
Luminance	0.0704 (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

#403CA5 #A1A53C

analogous

#3C6DA5 #403CA5 #753CA5

triadic

#403CA5 #A5403C #3CA540

tetradic

#403CA5 #A53C6D #A1A53C #3CA575

square

#403CA5 #A53C6D #A1A53C #3CA575

split-complementary

#403CA5 #A5753C #6DA53C

monochromatic

#1D1B4B #2F2C78 #403CA5 #5F5BC3 #8B88D4

Accessibility & contrast

On white

8.72

#403CA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#403CA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CA5

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CA5	#FFFFFF	#000000	##FFFFFF
##403CA5	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA8

Deuteranopia (green-blind)

#0047A3

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403ca5;
/* rgb */ color: rgb(64, 60, 165);
/* oklch */ color: oklch(42.7% 0.164 278.6);

Tailwind

colors: {
  custom: {
    50: '#8072c1',
    500: '#403ca5',
    950: '#000000',
  },
}

SCSS

$custom: #403ca5;
$custom-light: #8072c1;
$custom-dark: #000000;

JSON

{
  "hex": "#403ca5",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 165
  },
  "hsl": {
    "h": 242.286,
    "s": 46.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42675,
    "c": 0.16365,
    "h": 278.6
  },
  "luminance": 0.07038
}

Semantic roles & 50–950 ramp

primary

#403CA5

secondary

#BCBE7F

accent

#D651D1

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403CA5

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

Preview Lab → · Contrast checker → · Palette generator →