#403AA4#403AA4

#403AA4 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.2% C 0.165 H 279.2°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#403AA4
RGB	rgb(64, 58, 164)
HSL	hsl(243, 48%, 44%)
HSV	hsv(243, 65%, 64%)
CMYK	cmyk(61%, 64.6%, 0%, 35.7%)
CIE-LAB	lab(31.34, 34.54, -56.53)
CIE-LCH	lch(31.34, 66.25, 301.43°)
OKLab	oklab(42.24% 0.0263 -0.1627)
OKLCH	oklch(42.24% 0.165 279.2)
XYZ	xyz(10.3261, 6.7957, 35.8823)
Luminance	0.0680 (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

#403AA4 #9EA43A

analogous

#3A69A4 #403AA4 #753AA4

triadic

#403AA4 #A4403A #3AA440

tetradic

#403AA4 #A43A69 #9EA43A #3AA475

square

#403AA4 #A43A69 #9EA43A #3AA475

split-complementary

#403AA4 #A4753A #69A43A

monochromatic

#1D1A4A #2E2A77 #403AA4 #5E57C4 #8985D4

Accessibility & contrast

On white

8.90

#403AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#403AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403AA4

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403AA4	#FFFFFF	#000000	##FFFFFF
##403AA4	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA7

Deuteranopia (green-blind)

#0046A2

Tritanopia (blue-blind)

#005569

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #403aa4;
/* rgb */ color: rgb(64, 58, 164);
/* oklch */ color: oklch(42.2% 0.165 279.2);

Tailwind

colors: {
  custom: {
    50: '#8071c0',
    500: '#403aa4',
    950: '#000000',
  },
}

SCSS

$custom: #403aa4;
$custom-light: #8071c0;
$custom-dark: #000000;

JSON

{
  "hex": "#403aa4",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 164
  },
  "hsl": {
    "h": 243.396,
    "s": 47.748,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42244,
    "c": 0.16483,
    "h": 279.2
  },
  "luminance": 0.06796
}

Semantic roles & 50–950 ramp

primary

#403AA4

secondary

#BABE7C

accent

#D750D0

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #403AA4

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

Preview Lab → · Contrast checker → · Palette generator →