#403AA9#403AA9

#403AA9 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.7% C 0.171 H 278.7°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#403AA9
RGB	rgb(64, 58, 169)
HSL	hsl(243, 49%, 45%)
HSV	hsv(243, 66%, 66%)
CMYK	cmyk(62.1%, 65.7%, 0%, 33.7%)
CIE-LAB	lab(31.76, 36.21, -58.84)
CIE-LCH	lch(31.76, 69.09, 301.61°)
OKLab	oklab(42.68% 0.0258 -0.1695)
OKLCH	oklch(42.68% 0.171 278.7)
XYZ	xyz(10.7865, 6.9799, 38.3073)
Luminance	0.0698 (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

#403AA9 #A3A93A

analogous

#3A6CA9 #403AA9 #783AA9

triadic

#403AA9 #A9403A #3AA940

tetradic

#403AA9 #A93A6C #A3A93A #3AA978

square

#403AA9 #A93A6C #A3A93A #3AA978

split-complementary

#403AA9 #A9783A #6CA93A

monochromatic

#1D1B4E #2F2A7B #403AA9 #605AC6 #8C87D6

Accessibility & contrast

On white

8.76

#403AA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#403AA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403AA9

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403AA9	#FFFFFF	#000000	##FFFFFF
##403AA9	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAC

Deuteranopia (green-blind)

#0046A7

Tritanopia (blue-blind)

#00566C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403aa9;
/* rgb */ color: rgb(64, 58, 169);
/* oklch */ color: oklch(42.7% 0.171 278.7);

Tailwind

colors: {
  custom: {
    50: '#8171c3',
    500: '#403aa9',
    950: '#000000',
  },
}

SCSS

$custom: #403aa9;
$custom-light: #8171c3;
$custom-dark: #000000;

JSON

{
  "hex": "#403aa9",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 169
  },
  "hsl": {
    "h": 243.243,
    "s": 48.899,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42684,
    "c": 0.17147,
    "h": 278.7
  },
  "luminance": 0.06981
}

Semantic roles & 50–950 ramp

primary

#403AA9

secondary

#BDC07F

accent

#D84FD1

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #403AA9

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

Preview Lab → · Contrast checker → · Palette generator →