#403EB7#403EB7

#403EB7 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.6% C 0.185 H 276.6°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#403EB7
RGB	rgb(64, 62, 183)
HSL	hsl(241, 49%, 48%)
HSV	hsv(241, 66%, 72%)
CMYK	cmyk(65%, 66.1%, 0%, 28.2%)
CIE-LAB	lab(33.88, 38.44, -63.71)
CIE-LCH	lch(33.88, 74.41, 301.11°)
OKLab	oklab(44.6% 0.0211 -0.1837)
OKLCH	oklch(44.6% 0.185 276.6)
XYZ	xyz(12.3814, 7.9531, 45.6732)
Luminance	0.0795 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.29

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403EB7 #B5B73E

analogous

#3E78B7 #403EB7 #7C3EB7

triadic

#403EB7 #B7403E #3EB740

tetradic

#403EB7 #B73E78 #B5B73E #3EB77C

square

#403EB7 #B73E78 #B5B73E #3EB77C

split-complementary

#403EB7 #B77C3E #78B73E

monochromatic

#201F5C #302F89 #403EB7 #6867CB #9694DB

Accessibility & contrast

On white

8.11

#403EB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#403EB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EB7

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EB7	#FFFFFF	#000000	##FFFFFF
##403EB7	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BB

Deuteranopia (green-blind)

#004AB5

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #403eb7;
/* rgb */ color: rgb(64, 62, 183);
/* oklch */ color: oklch(44.6% 0.185 276.6);

Tailwind

colors: {
  custom: {
    50: '#8374ce',
    500: '#403eb7',
    950: '#000000',
  },
}

SCSS

$custom: #403eb7;
$custom-light: #8374ce;
$custom-dark: #000000;

JSON

{
  "hex": "#403eb7",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 183
  },
  "hsl": {
    "h": 240.992,
    "s": 49.388,
    "l": 48.039
  },
  "oklch": {
    "l": 0.446,
    "c": 0.18496,
    "h": 276.6
  },
  "luminance": 0.07954
}

Semantic roles & 50–950 ramp

primary

#403EB7

secondary

#C5C68A

accent

#D94FD7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #403EB7

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

Preview Lab → · Contrast checker → · Palette generator →